网上购物安全英语（汇集20篇）

Legal Affairs Office of the State Council of China publicized the exposure draft of School Bus Safety Regulations on Dec. 11th, 2011 to collect public opinions.

During the past year, there have been several severe school bus accidents which claimed many young lives. These tragedies came as a shock to everyone, and they have aroused great concern among people from all walks of life. The publication of the draft regulations indicates that our government has realized how serious the situation is and that it is taking effective measures to ensure the safety of the school bus.

In my opinion, the draft regulations reflect a deep concern from our government as well as from the public about students’ lives. When put into effect, the regulations will surely help reduce the number of accidents and benefit schools and families as well. Also, they will be of vital importance in stabilizing the society.

Today is a primary school safety education day, our class held a theme of "pay attention to safety, cherish life" class meeting.

At the class meeting, "the teacher asked us:" what do I do during the earthquake?" Leon, said: "should ran to the playground." "The teacher then asked:" if the earthquake is very strong?" I answered: "that ran to the corner, or hide under the rigid object." What should do? Next, "the teacher asked us to watch the video of safety education. By watching the video, I know, fire is 119, bandit, p is 110 emergency phone number is 120. I also know that, if on the tall buildings in danger, can emit light to ask for help. Can also be dumping kind of soft objects such as pillow, attract the attention of the passers-by. If you get lost in the wild, can ignite the branches, leaves a smoke for help, you can also use stones into the words "SOS" to ask for help. A fire, you can use a wet towel to cover your mouth and nose, crawling to escape.

In the class meeting, we understand and remember a lot of safety knowledge and survival skills, to correctly handle dangerous after we bring a lot of help!

今天是小学生安全教育日，我们班召开了主题为“注意安全，珍爱生命”的班会。

在班会上，申老师问我们：“地震时应该怎么做?”李昂说：“应该赶快跑到操场上去。”申老师接着问到：“如果地震很强烈呢?”我回答说：“那就跑到角落里或者躲到坚硬的物体下面。”到底应该怎样做呢?接下来申老师让我们观看了安全教育的录像。通过观看录像，我知道了，火警是119，匪警是110，急救电话是120.我还知道了，如果在高楼上遇到危险，可以发出光来求救。还可以向下投掷比如枕头一类的软物，吸引路人的注意。如果在野外迷路，可以点燃树枝，树叶发出浓烟求救，还可以用石头摆成“SOS”的字样来求救。发生火灾时，可以用湿毛巾捂住口鼻，爬着逃生。

在这次班会中，我们了解并记住了许多安全知识与逃生技能，对我们以后正确处理危险带来了很大的帮助!

Im writing to tell you something about the problem of food safety.

“The food is what matters to the people， the food by An Weixian”， the humanity grows， the economy soars， the social progress， the time cannot leave food， cannot leave the security， hygienic， nutrition food.“How can like this? How should we manage?”The general populations were asking unceasingly “we must eat safe food” the general populations to request unceasingly， populaces call， stimulates to movement us to ponder， moves.

"Food enterprise， the conscience enterprise”， food production management enterprise is qualified， the high quality food producer， is the person who has rendered meritorious service， also is the inferior harmful food manufacturer， and possibly bees the criminal， therefore said， food produces the operator is the food security first owner， decides food quality the key aspect both is the technology， also is not the management and the equipment， the key lies in food production in the human key to manage the owner and jobholders professional personal integrity and the moral standard.

The dead pork production meat product， the use industry paraffin wax manufacture hot pot bed charge， the use sodium hydroxide soaks floods sends the product， dont they know these things harmfully? Also non-， how lets us listen to the production protein content only is 2% powdered milk production busineowner when hears the long-term oral administration powdered milk causes the big end of baby death is says， “， this kind of powdered milk cannot eat continuously， we always do not eat in any case， we all arrive the supermarket to buy several dozens Yuan tin of import powdered milk to eat”.

This accident made me realize the seriousneof the food safety problem. I sincerely hope that the whole society pay much more attention to food safety.

How to improve network security

As time goes ongoing surfing on the Internet become more and more popular.It is a new phenomenon and sounds an alarm (for online security ).

Network security cover anti- virus network security and hacker protection . Together with the technology of Access Control redundant backup recovery and network security it makes an allround security system . Many companies devote to the information security technology and product research and development production and sales providing advanced network security solutions . Firewall just is an effective measure of network security .如何提高网络安全

随着时间的推移，上网冲浪变得越来越流行，这是一个新的现象，听起来是一个警钟(在线安全)。

网络安全覆盖防病毒、网络安全和黑客保护。结合访问控制技术、冗余备份恢复、网络安全，它使一个全面的安全系统。许多公司致力于信息安全技术和产品的研发、生产和销售，提供先进的网络安全解决方案。防火墙只是是网络安全的一种有效措施。

Teachers and parents are working together to ensure the health and well-being of all children.Schools are really safe places for children to be,and they are the heart of the community.Lets make sure they stay that way.Fortunately,schools,parents,and communities are finding practical ways to provide children the safe and disciplined conditions they need and should expect to find in school,such as by promoting smaller schools,respectful communities,fair and rigorously enforced discipline codes,teacher training to deal with violence,school uniforms,and after-school programs that keep kids productive and off the streets.We must get violence out of our schools,and we must put discipline and learning back in them.

老师和家长一起合作以确保所有儿童的健康和福祉.学校是真正安全的地方的孩子,他们是社会的中心.让我们确保他们保持这种方式.幸运的是,学校、家长和社区发现实际可行的方法来提供儿童安全、纪律严明的条件他们需要和应该期望发现在学校,如通过促进小型学校,尊重社区、公正、严格执行纪律规范,教师培训来应对暴力、学校制服,和课外项目,让孩子生产和上街.我们必须从我们的学校暴力,我们必须把纪律和学习回到他们.

建设平安校园是我们每个人的责任与义务。作为一名学生，我们更应该珍惜自己的生命，更应该注意自己的人身安全。假如你是Li Hua，并担任校学生会主席，请你就安全问题，向全校学生发出倡议，写一封安全倡议书。

内容提示：(1)不带管制刀具到学校;(2)不私自下河洗澡;(3)不打架;(4)上学放学的途中应该注意安全;(5)遇紧急情况，立即报告警察或老师。

参考词汇：管制刀具：restricted knives or things;洗澡：have a bath;打架：fight;紧急情况：emergency;交通安全：pay attention to the traffic。

写作要求：(1)用词恰当，要点全面，层次清晰，书写规范。(2)可适当发挥，80词左右，开头、结尾已给出，不计入总词数。(3)严禁出现自己的真实姓名和学校等相关信息。

范文

Dear students,

As we know, safety is the most important thing in our lives. So, we should try our best to make sure we are safe. We mustn’t bring restricted knives or things to our school because these things may cause serious problems. Do not have a bath in rivers or ponds by ourselves without our parents’ permission. And, we should be friendly to others so fighting is strongly banned. Make sure that we should always pay attention to the traffic on our way to school or home. Furthermore, if we meet some emergency, we must call for help from the police or our teachers. In a word, following these safeties rules above can make us live in peace.

Yours,

Li Hua

[校园安全的英语作文

导语：正如我们所知道的，安全是我们生活中最重要的东西。所以，我们应该尽力确保我们的安全。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

建设平安校园是我们每个人的责任与义务。作为一名学生，我们更应该珍惜自己的生命，更应该注意自己的人身安全。假如你是Li Hua，并担任校学生会主席，请你就安全问题，向全校学生发出倡议，写一封安全倡议书。

内容提示：(1)不带管制刀具到学校;(2)不私自下河洗澡;(3)不打架;(4)上学放学的途中应该注意安全;(5)遇紧急情况，立即报告警察或老师。

参考词汇：管制刀具：restricted knives or things;洗澡：have a bath;打架：fight;紧急情况：emergency;交通安全：pay attention to the traffic。

写作要求：(1)用词恰当，要点全面，层次清晰，书写规范。(2)可适当发挥，80词左右，开头、结尾已给出，不计入总词数。(3)严禁出现自己的真实姓名和学校等相关信息。

★ 范文

Dear students,

As we know, safety is the most important thing in our lives. So, we should try our best to make sure we are safe.

We mustn’t bring restricted knives or things to our school because these things may cause serious problems. Do not have a bath in rivers or ponds by ourselves without our parents’ permission. And, we should be friendly to others so fighting is strongly banned. Make sure that we should always pay attention to the traffic on our way to school or home. Furthermore, if we meet some emergency, we must call for help from the police or our teachers.

In a word, following these safeties rules above can make us live in peace.

Yours,

Li Hua

【汉语翻译】

亲爱的同学们，

正如我们所知道的，安全是我们生活中最重要的东西。所以，我们应该尽力确保我们的安全。

我们不能带限制的刀子或东西到我们的学校，因为这些东西可能会导致严重的问题。未经父母允许，不得在江河或池塘内洗澡。我们应该友好地对待别人，所以强烈禁止打架。在上学或回家的路上，一定要注意交通。此外，如果我们遇到紧急情况，我们必须向警察或我们的老师求助。

总之，这些安全规则可以使我们生活在和平。

你的好朋友，

李华

As we all known,food safety problems are more and more popular in our country,because

more cases about food safety problem have appeared.

Firstly,As the old saying goes,the food is what matters to the people.Food plays an important role in peoples life.So food safety influences peoples health and life.Secondly,some producers only think about earning money without thinking about ensuring food safty.they produce unqualified food.Thirdly,some food supervisory departpents dont perform their duty completely.This behavior make some producer ignore the safety of production.

If we want to solve problems that is illustrated former,we must call on the supervisory department to manage the food market.And the producers must paly their roles.Lastly,we hope that there is law that punish illegal acts.

When I walk on the street, I found most people don’t obey the traffic rules, they just ignore the rules, when there are a lot of people go across the street, they just follow them. It is so dangerous, the accident is very easy to happen, the car will hit the people any time. For the safety, we should obey the traffic rules.

当我走在街上的时候，我发现很多人不遵守交通规则，他们忽视规则，当很多人过马路的时候，他们跟着人群。这是很危险的，很容易发生意外，车子会随时撞到人。出于安全问题，我们应该遵守交通规则。

According to recent reports, an increasing number of crimes have taken place on campus. school around the world are facing security problems such as theft, fraud, violence, sexual harassment, fire disaster and traffic accident etc., which seriously affect students school lives and make students live in fear. Therefore, it is high time that we should take actions to improve its current situation. First, related departments, including administrative personnel, teachers and students, should know clearly about their own responsibilities and cooperate to solve the problems. Second, equipments such as monitors should be installed on campus so as to detect crimes as soon as possible. Most importantly, we might have to nip something in the bud before it becomes a problem. We should strengthen college students ideological and political education, pay attention to their mentality health and give timely help if they need. With our endeavor, campus security will be improved greatly, and universities will be holy places where one can enjoy peaceful and harmonious atmosphere again.

I hope to have a piece of his watch. It doesnt, mom allow me to let me buy a piece. I was ecstatic, mom let I promise anything, I also dont listen, just happily agreed.

Mother suggested to buy on the net, I agreed. I also conveniently opens at my most trusted the most commonly used dangdang. I in the search bar to play on the word "watch". Mama ah, full screen is at sixes and sevens. Cant do this, I narrowed the range, changed to "students watch". This time, there are many beautiful is suitable for students to watch.

Mom and I took a fancy to a turquoise material silicone watches. Conspicuous slender pointer, turquoise rough strap, black dial, let a person cannot be removed from above the line of sight of. I want to take it impulsively, but my mother let me look at first, to shop around.

Speak too. I turn the page, my eyes were attracted by the other table. It has a blue strap, a pointer to the winding yellow like instant noodles, amusing, blue cartoon dial outside there is a green circle. I immediately took it and made contrast that piece before. I prefer this in, by contrast, of course. After ask mom for permission, skillfully I fill in the order, and confirm, system prompt me immediately successful.

Im looking forward to more watch hurry to ah. I really appreciate the science and technology developed, now never leave home can shopping!

我早就希望有一块自己的手表了。这不，老妈竟然答应我让我买一块。我欣喜若狂，老妈让我保证什么，我也听不进去了，只顾高高兴兴的答应着。

老妈建议到网上去买，我同意了。我顺手点开了我最信任也最常用的当当网。我在搜索栏打上了“手表”二字。妈呀，满屏幕都是乱七八糟的表。这可不行，我缩小了范围，改成了“学生手表”。这回，出现了许多漂亮的适合学生的手表。

我和老妈看中了一个材质硅胶的青绿色手表。显眼细长的指针，青绿的凹凸不平的表带，黑色的表盘，让人的视线无法从上面移开。我冲动地想拍下它，可是老妈却让我先再看看，要货比三家呀。

说得也是。我翻动着页面，目光被另一只表吸引住了。它有蓝色的表带，黄色的弯弯曲曲的指针像方便面一样，惹人发笑，蓝色卡通的表盘外有一个绿圈。我立刻拿它和之前那块做了对比。我在相比之下当然更喜欢这块。在征求老妈的同意后，我熟练地填了订单，并确认，系统立刻提示我成功了。

我现在多盼望手表快点到呀。我真是领略了现在科技的发达呢，足不出户就可以购物!

"Saying" claims, suggesting that food for us how important it is! However, you have in the diet, pay attention to diet and health? If you do not pay attention to health may be because a little small negligence lost precious life.

Although I was a pupil, but I know there are plenty of knowledge about food safety! For example cant buy things from a market stall, in the absence of hygiene license at a restaurant, can not eat expired, deterioration, "3 without" food, not eating undercooked, and so on. I also know when to buy small food, pay attention to view the following several aspects: one is to choose good reputation, stable quality of famous brand; 2 it is to pay attention to check the product producer name and address on the package, food production date and shelf life, refused to buy "3 without" product; Three is to check food and qualified, the nutrients contained, color fresh degree; Four is to pay attention to the quality and price, small food of ultra-low prices dont buy; Fifth, pay attention to check the food of trademark signs, and so on.

You see, we must choose good food, eat food or it may bring us life risk.

“民以食为天”，这说明食品对于我们来说是多么的重要!不过，你在饮食过程中有没有注意饮食卫生呢?如果你不注意，卫生就可能因为一点儿小小的疏忽而丢失宝贵的生命。

虽然我还是一个小学生，可我懂得的关于食品安全的知识可不少呢!比如说不能在小摊上买东西、不能在没有卫生许可证的餐厅吃饭、不能吃过期、变质、“三无”食品、不能吃未煮熟的东西等等。我还知道在购买小食品时，注重查看以下几个方面情况：一是要选择信誉好、质量稳定的知名品牌;二是要注意查看产品包装上的厂名、厂址、食品生产日期和保质期，拒绝购买“三无”产品;三是检查食品和合格、所含的营养成分、色泽新鲜程度;四是注意质价相符，对超低价格的小食品不要购买;五是注重检查该食品的食品商标标志等等。

大家看吧，我们吃食物时一定要选择好的食物，否则就有可能给我们带来生命危险。

Recently, we often see on TV or newspaper about the school bus accident for registration. Many students for the school bus accident injury, even so many innocent little life ruined, this shows the seriousness of the school bus accident.

For years with the development of economy, the cars on the road more and more, the accident is frequent, so the school bus accident had to cause we the high value.

I think the relevant national authorities should take the perfect school bus standard, completes the school bus design, production, transformation, equipped with the work, and establish the corresponding management system, the appropriate funds to raise money for the school bus. Increase the degree of concern to peoples school bus, called on all together, protect the school bus on the school bus.

[有关校车安全的英语作文

Every year a lot of people got injured or died in traffic accidents. It is

reported that many accidents resulted from people’s breaking of traffic rules.

So it is necessary for all to keep the traffic rules in mind and obey them

strictly.

When one crosses the street, one should take the crosswalk, underground

passage or pedestrian overpass. If one is riding a bike or motorcycle, keep

riding on the right side of the road. When the red light is on, please stop and

wait until the green light is on. Give a hand signal if one wants to turn or

stop. It is important to let the children know that playing on the road is very

dangerous. Helping the aged and children cross the road is always a kind deed.If

everyone obeys the traffic rules, it will be much safer to walk or ride on the

road.

On Saturday morning, I just get up, father commanded, online for him to buy a haier washing machine computer board.

Too good I think, I can also shopping on the Internet, I turned on the computer first, connect to the Internet, watching dad with, Ill open the "ali wangwang," and then search the haier computer board models. A: wow! A lot of computer version! See me dazzling, I one by one with the old computer version to check, I carefully looked at each socket on a computer and whether or not the top of the old, in the end I found 8 PC board, I look at the price you nine more than a dozen, some one hundred, some eight dozen, I chose a nine more than a dozen to dad, dad said: "just take this one, I call father with somebody else to talk about the price, I order something like the rain, after opening and QQ chat as above, dad on fast typing, the other is talking about the price. Dad said:" eighty yuan ok selling does not get the man said, dad said to you again, at least how many yuan? Said the man, 88, 88 yuan said dad, later will buy you things well, the man put the price change to 85, I click the buy now and then call father enter alipay password soon showed successful purchase above can the father asked the man what time the arrival of the goods, the other said: "on Sunday afternoon to shentong express delivery, I will come in the afternoon delivery.

I almost cant wait at home, finally arrived a bit more on Sunday afternoon, shentong express telephoned to say that the goods arrived, my father and I drove to across the campus shentong express delivery, the man asked my fathers name, it is found, and then turned over dad signed my name, you can take away the I opened the package inside computer board intact, returned home on my computer, according to confirm the delivery of the transaction is successful, I will evaluate each others attitude, I also know how to shopping on the Internet, listen to father say something online is cheaper.

星期六的早上，我刚起床，就托爸爸的吩咐，在网上为他买一块海尔洗衣机电脑板。

我一想，太好了我也可以在网上购物了，我先打开电脑，连接网络，爸爸在一旁看着，我先 打开“阿里旺旺”然后搜了一下海尔电脑板的型号。哇!好多电脑版呀!看得我眼花缭乱，我一个一个的跟旧电脑版核对，我仔细地看着电脑上的每一个插孔和旧的上面是否一样，最后我找到了8块一样的电脑板，我再看一下价格有得九十几，有的一百几，有的八十几，我选了一块九十几的给爸爸看，爸爸说：“就拍这一款，我叫爸爸跟人家谈一下价格，我点了一下像雨点一样的东西，打开后和QQ上面聊天一样的，爸爸在上面飞快的打着字 ，对方也在谈着价格。爸爸说：“八十元行不行那人说卖不了得，爸爸又问你说，最少多少元?那人说88，爸爸说85元，以后还会买你的东西的好吧，那人把价格改成85，我点击立即购买然后叫爸爸输入支付宝密码不一会上面就显示成功购买就可以了爸爸问那人什么时候到货，对方说：“星期天下午能到申通速递，我下午就来发货。

我在家快等不及了，终于到了星期天下午一点多，申通速递打电话说货到了，我和爸爸开车去分校对面的申通速递，那人问爸爸的姓名，然后翻了一下就找到了，爸爸签了一下名字货，就可以拿走了我打开包装里面的电脑板完好无损，回到家我在电脑上按了一下确认收货，交易就成功了，我便评价了对方的态度就行了，我也知道怎样在网上购物了，听爸爸说网上的东西还比较便宜。

In the field of food safety in our country in recent years, the worrying problems. Kentucky Fried chicken "Sudan red", "sodium formaldehyde sulfoxylate in tofu, dumplings in the" poisonous green vegetables "... More dangerous is the "melamine", it is not only present in high amounts in milk, also exist in the eggs. These diverse food safety issues, like the global outbreak of the financial crisis, across the earth, to peoples life and health has brought serious influence, more affecting everyones heart.

The original food safety problem happened on our side, may be happening in our endangering our health. I think, our country should pay great attention to the food safety problems, only by strengthening legislation, strict law enforcement to stop the emergence of these problems. At the same time as a primary school student, we should also actively involved in the food safety propaganda, let more people know the dangers of food safety, resistance to pesticides food, chemical, food and food problems, in this way can we make food safety with our health.

近年来，在我国食品安全领域出现了令人忧虑的问题。肯德鸡的“苏丹红”、豆腐中的“吊白块”、水饺中的“毒青菜”……更危险的是“三聚氰胺”，它不仅在牛奶中大量出现，还在鸡蛋中存在。这些形形色色的食品安全问题，就像目前全球暴发的金融危机一样，席卷整个大地，给人们的生命健康带来了严重的影响，更牵动着大家的心。

原来食品安全问题就发生在我们的身边，也可能正在发生在我们的身上危害着我们的健康。我想，我们国家要高度重视食品安全这个问题，只有通过加强立法，严格执法才能制止这些问题的出现。同时做为一名小学生，我们也要积极地参与到食品安全的宣传中，让更多的人认识食品安全的危害，抵制农药食品、化学食品、问题食品，这样才能让食品安全与我们的健康同行。

My dear schoolmates,

There is no denying that safety plays an important part in our daily life. Recently our school has carried out a program aimed at making our campus a safe place to stay on. I considered this as indeed a good practice, which will make us aware that safety should come first in our daily life, whether when we stay at school or outside it. When we are doing sports, we should attach importance to the safety and avoid being hurt.

Furthermore, when we get into trouble with our classmates, we should remain calm and avoid any form of fighting, which may only bring suffering and pain to us mentally and physically.

As far as I’m concerned, I feel all the students and teachers should work hard and creatively to keep the “Safe Campus” activity in mind. Besides, we are supposed to

observe the law discipline wherever we are. Let’s start right now and spare no effort to do little bit every hour and I hope we have a good time everyday!

Thank you!

On the one hand, the online shopping are very convenient. Unlike the physical stores, there is no limit of time for you to do the shopping online. And you can find anything in the online store, some of which you may hardly buy at the local. And also, the price is relatively transparent, you can choose the affordable one to buy.

On the other hand, since the goods are only presented by the pictures and descriptions, it is hard to tell its reality, so you might have bought something you don’t like, or even the fake one. Of course you can ask for the after service, but it will increase your cost of the time. And the advertisements on the online shops may make you spend much more money on online shopping without being conscious.

With the growing awareness of healthy eating， more and more people now are

paying more attention to the importance of healthy diet and an active life。 But

at the same time， a growing unrest over food safety in the China has caught

everyone’s concern。

When it es to the food safety incidents， especially 2008 Chinese milk

scandal， every consumer has much anger to pour upon them。 In September 2008， a

fresh outbreak of kidney disease occurred， due to baby formula contaminated by

melamine.Three babies died and over 6，000 were made sick by the tainted formula。

The supplier of the milk， Sanlu Group， is a name brand and is a major player in

the industry in China。 The pany is said to have known of the problem for months，

but claims the contaminant came from milk suppliers.

Who should be main responsible for these serious incidents like milk

scandal? On one hand， plex China’s food regulations should shoulder part

duties.We should realized its monitoring system can be unresponsive， and the

government departments that oversee and enforce policies have overlapping and

often ambiguous duties。 On the other， food producers and suppliers lack deserved

responsibility for consumers! What they cares is only their own interest and

profit maximization.

In my opinion ，everyone involved in it should set up a high responsibility

for others， law related should be passed and carried out.Only in this way can we

e by a healthy eating and a harmonious world.

The advent of the Internet ushered in a new era of interpersonal communications and business operations. Undoubtedly, the Net are revolutionizing the daily lives of the people who have an access to it. The primary reason behind the Internet boom roots in its multifunction. It provides a vehicle for netizens to shop, search, publish blogs and browse WebPages.

A range of problems lurking behind the frenzy of Internet impressively stand out. A vast majority of Internet users mail boxes are saturated with junk mails, an issue which sparks strong criticism and generates the loss of corporate productivity. Its not alone. Porn websites lure a growing number of young peoples visits. False news via the e-mail, BBS and chat room increasingly poses a threat to the social prosperity and stability.

To crack down them, we should push for a more effectively tough law. We should join our forces to launch a nation-wide campaign, including imposing stiff penalties on spammers, shutting down or blocking the lewd sites and introducing a real-name registration system to curb fraudulent messages. We can fully believe that our combined efforts will reap rewards. A clean cyberspace will paint our lives more colorfully. An economically booming and technologically advanced global web will play a vital role in the national economic and cultural advancement.

Along with the time development, accessing the net already turned the extremely universal matter. No matter is adult or the child, so long as mentioning the computer, all think of internet. But, accessing the internet is advantageous ,but also has shortcoming.

I knew very many people access the net, mainly is for playing games, which is very bad for the study. Therefore, some people believed, the elementary and middle school students lack the self-control.

But,there are many people approving to accessing internet, why? Because internet can provide to the people very helps. First, the network looks like a library, we can look up very many materials easily,and it is quicker than the speed of consulting books; Next, we may read a richer news on-line; In addition, accessing the net also has other functions, for example, E-mail, telephoning on the net and so on.

Actually, accessing the net has its profit and the shortcoming place. We use it to open to expand the field of vision, the study knowledge, but must certainly grasp the discretion.