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环境污染话题英语作文【汇总20篇】

物竞天择,适者生存,这一点就算是在我们的英语作文中也是适用的。下面是小编为大家搜集整理的环境污染话题英语作文,欢迎大家阅读与借鉴,希望能够给你带来帮助。

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怎样改善环境英语作文

全文共 450 字

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How to protect the environment

Its very impont for us to protect the environment good environment can make people feel happy and fit.To improve the environment means to improve our life.we should plant more trees and flowers around us.we shouldnt cut them down.we should stop factories from pouring west water into river.Dont draw on public walls.After all,its our duty to protect the environment.We hope our world will become more and more beautiful.

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篇1:描写环境问题的英语作文

全文共 1255 字

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The pictures symbolically illustrate pollution is becoming increasingly serious around the globe. In the first cartoon, a man is scorching the earth on a chimney. In the second one, a famous ancient Chinese poet, Wang Bo is astonished by the heavy smoke poured by chimneys into the air and dirty river polluted by a factory. We are informed that “the autumn river is the same color with the sky”。

The drawer is sending a message about the significance of the need for everyone to fight against the danger of environmental pollution. There is no denying that the industry is indications of civilization, proGREss and development. Unfortunately, as industry develops, so will the number of factories, and the amount of industry pollutants. We are so development-oriented that we almost can sacrifice our blue sky and pure water in order to obtain a little material gain.

As a consequence, it is imperative for us to take drastic actions. On the one hand, the factories should be equipped with devices which can dispose of waste gas and water so as to prevent them from polluting our planet. On the other hand, there should be an increasingly loud voice from the public for firm actions against poisonous gas sent off and unhealthy water polluted by factories.

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篇2:保护森林环境英语作文

全文共 1083 字

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保护森林(Protecting the Forests)

Now in some places of our country, a number of people have been cutting down the trees in the forests because they need wood and more farmland. The areas of forests are getting smaller and smaller. Some scientists say that there will be no vast forests in 20 or 30 years. It is really a terrible thing. Where the forests disappear, dust storms will occur occasionally. The weather will get hot and dry. The whole earth will become a big desert. A lot of plants and animals will disappear.Crops will not grow anywhere. Life will be difficult for everyone. The human beings will be punished for their forest-destroying activities.

Therefore, we should realize the importance of taking care of our forests. We should do our best to protect our living environment and keep our mountains green,the water clean, and the sky blue.

保护森林

在我国的一些地区,由于需要木材和得到更多的耕地,许多人一直在砍伐森林中的树木,森林面积正变得越来越小。一些科学家预言二三十年后将不会再有大片的森林,这真的是一件可怕的事情。森林在哪里消失,沙尘暴就在哪里发生,天气会变得炎热而干燥,整个地球会变成一个大沙漠,大量的动植物会消失,没有地方再长庄稼,生活会变得很艰难,人类因为破坏森林的活动将受到惩罚。

因此,我们应该认识到保护森林的重要性,尽最大努力保护我们的生存环境,保持山绿、水清、天蓝。

[保护森林环境英语作文

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篇3:放烟花污染环境的

全文共 519 字

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春节到,真热闹,穿新衣,戴新帽禁止燃放烟花爆竹作文5篇。家家户户放鞭炮”。这是描写过新年的一首老诗。20xx年的春节即将来临。市政府发出通告:“越城区二环以内禁止销售燃放烟花爆竹。”看到这个标题时我心中曾经产生过疑问:为什么不能燃放烟花爆竹呢?烟花升到空中,五颜六色的样子多漂亮啊。爆竹声声也可以增添节日欢乐的气氛。通过学习,我明白了烟花爆竹燃放后可以导致严重的空气污染,噪音污染和火灾隐患。空气污染和噪音污染可以影响绍兴的生态环境,给人们的身体健康带来危害,火灾会使国家和人民的财产遭受损失。

然而,禁止燃放烟花爆竹的执行情况并不令人乐观,半夜里,爆竹响声阵阵,小区里结婚,酒店里孩子办满月酒,都要燃放烟花爆竹来庆贺。

政府发出的禁令,我们需要严格遵守。但禁令屡屡被当作耳边风,却无人受到惩罚,这样一来,就会有更多的人效仿,管理就会难上加难。因此,对于有禁不止者,政府应加大监督和处罚力度,更重要的是,每一个人必须从自我做起,自觉遵守政府禁令。我们必须意识到,燃放烟花爆竹是不折不扣的自杀行为。

作为一名小学生,不仅要带头遵守政府禁令,还要向家长、邻居和周围居民作好宣传工作,让我们在清新、和谐的环境里过一个祥和的春节。

[放烟花污染环境的作文

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篇4:以冬眠为话题的英语作文

全文共 1704 字

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Hibernation is more than sleep. It is a very deep sleep.The animals temperature drops to just over zero centigrade,and its heart beats very slowly. People who find hibernating animals asleep often think that they are dead: the body feels very cold, and the creature may breathe only once every five minutes. A hibernating animal cannot feel any pain. You can touch it, or even pull its tail, without causing it to move or wake up. In its hibernating state it can even live in a poisonous atmosphere for a long time without any ill effect.

Hibernating in this way, the animal can sleep all through the winter. You might wonder how it manages to live without eating for so many months. The answer lies in two facts. Thefirst is that it has stored supplies of fat in its body during the summer and autumn. The second is connected with the main use the body makes of food -- to supply the energy for movement. We have seen that hibernating animal reduces movement to far below the ordinary level. Even the movements of the heart and lungs are greatly reduced. The animal hardly makes any movement, hardly use any energy, and hardly needs any food.

Some animals, including some bears only half hibernate.That is to say, they sleep during the winter, but their sleep is not deep and their body temperature does not drop, as they are warm-blooded animals. In the antumn the bear eats and eats and becomes very fat. His hair grows longer. Soon he has a thick covering of fat and fur. In November he finds a place to lie down and goes to sleep. On warm winter days he may think spring has arrived; he gets up and walks around. When he sees that the snow is still thick on the ground, he quickly goes to sleep again.

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篇5:家乡环境污染作文600字——家乡变了

全文共 390 字

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家乡变了,真的变了!天空变暗了;小鸟变少了;小河变浑了,就连鱼虾都“躲”了起来。

家乡变的原因还是冒滚滚浓烟的囱和污水。

这几年来,工厂不断的生产,废气从烟囱里冒出来,污水不断从管道里淌出来。

还有就是人们乱堆垃圾,把地球的“外衣”破坏了。

就这样,家乡被污染了。

小河在哭泣,哭泣自己没有伙伴;小鸟在呼吁,呼吁自己美好的家园;地球在痛苦,痛苦自己没了外衣;

我知道,原来家乡不是这样的。

原来的家乡天是一片碧蓝,河是清澈见底,鱼虾自由自在,鸟儿成群飞翔。

而现在呢?现在的家乡已不是昔日的家乡了,现在……

小鸟呼吁人类:人类,请你们不要把树木砍伐,让我们无家可归,四处流浪。

我呼吁人类:请你们不要把垃圾四处乱丢,让空气变的浑浊,请你们为自己想一想,如果哪一天空气没了,你们会怎么样?

让我们一起保护自己的家园,不要让家园的环境再变难看,而要让家乡的环境变得更美!一起行动起来,为自己创造一片蓝天吧!

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篇6:生活环境污染

全文共 257 字

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这里有几片茂密的森林,森林之间有一条清澈的小河,就就像一条蓝色的绸带。

可是 ,渐渐地周围的森林被砍伐的所剩无几了,小河中原来清澈的河水也不见了踪影,却变成了臭气熏天的臭水沟。这都因为人类无情的破坏!小燕子对小鱼说:“人类 太可恶了,不仅把地球母亲弄得千疮百孔,还把我们赖以生存的家园给破坏了!“小鱼说道:是呀,因为人类 ,现在的水质变得越来越差了,我简直活不下去了。还因为人类工厂的废气排放,让我再也看不到湛蓝的天空了!”

当我看到了这个情景,我攥紧拳头,心里又伤心又愤怒,我想:那些人们有良心吗?请你们珍惜地球吧!

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篇7:以外国人对中国的印象为话题的英语作文

全文共 888 字

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Nowadays, Chinese people are everywhere, on the one hand, they like to travel and on the other hand, the population is very large. But foreigners’ impression on Chinese is not always good. The media have reported the negative incidents that were brought by Chinese tourists, and many foreigners have given their opinion and criticized the tourists’ behavior. It is true that many Chinese people haven’t realized their bad behavior, such as talking loudly in the public occasion. As we have the large population, so not every people has the chance to receive good education. What’s more, the foreign media just reported the bad side while ignoring the good side, so the foreign people always think Chinese people are rude. We admit that we are not doing well enough and we need to behave ourselves. And I believe that a wise man will make his own judgment when he communicate with Chinese.

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篇8:污染环境的日记300字

全文共 469 字

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现在的天气越来越糟了,那都是人们把环境污染了。

几乎每天都是阴沉沉的,很少看见蓝蓝的天空和明媚的阳光,即使是倾盆大雨过后,都很难见到蓝蓝的天空上面挂着五颜六色的彩虹。那是因为雾霾天气,它是指是指大气相对湿度介于80-90%之间时的大气混浊视野模糊,这种情况的大气能见度低是霾和雾的混合物共同造成的。除了气象条件,工业生产、机动车尾气排放、冬季取暖烧煤等导致的大气中颗粒物(包括粗颗粒物PM10和细颗粒物PM2。5)浓度增加,是雾霾产生的重要因素。如今很多城市的污染物排放水平已处于临界点,对气象条件非常敏感,空气质量在扩散条件较好时能达标,一旦遭遇不利天气条件,空气质量和能见度就会迅速下滑。

我讨厌雾霾天气,这让我感觉到生活在不健康的环境中,我希望我们可以生活在蓝天白云下面,所以我有以下建议来减少环境污染:1。工厂冒出来的废气要经过过滤。2。大家尽量要绿色出行,少开车多走路多骑车。3。不要乱扔垃圾,做好垃圾分类,做好废物回收利用。

只要人人都献出自己的力量,从我做起,爱护我们的环境,地球会不再被污染,漂亮起来,到处都是蓝天白云鸟语花香。

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篇9:春节话题初一英语作文

全文共 973 字

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现在越来越多的外国人开始学习中文,了解中国的文化。作为中国的传统节日过年,更应该向大家介绍介绍。接下来小编为你带来过年话题初一英语作文,希望对你有帮助。

The Spring Festival is very important to Chinese people. In the past,people could not often have meat,rice or other delicious food. They could only eat these during the Spring festival. So every year they hoped that the Spring Festival would come soon. Now, although people‘s life is much better,and we can eat the delicious foods everyday. People still like the festival. Because most people can have a long holiday,and we are free to go on a trip or visit our friends or have parties with our family. In the evenings,we can have a big meal in the restaurant or stay at home with family and watch the TV programs.

过年对中国人来说非常重要。在过去,人们往往没有肉,大米或其他美味的食物吃。他们通常只能在过年吃到这些。所以每年他们都希望过年可以快点来。现在,虽然人们的生活好多了,我和家人每天都可以吃美味的食物。人们仍然喜欢的过年。因为大多数人可以有一个很长的假期,我和家人可以自由地去旅行或拜访我和家人的朋友或与我和家人的家人聚会。晚上,我和家人可以在餐厅大吃一顿,或与家人留在家里看电视节目。

I like the Spring Festival very much. How wonderful the Spring Festival is!

我非常喜欢过年。过年是多么的美妙啊!

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篇10:爱护环境600字话题

全文共 840 字

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我是初二年级班的,受到大家的支持和鼓励,我才得以站在这个讲台上对大家进行演讲,因此请先让我感谢大家,谢谢大家的支持!今天我要演讲的题目是“保护环境,从我做起”。

我们的地球,我们共同的母亲,是一个有着几十亿年历史的生命行星。也是目前人类已知的唯一一颗生命行星,对于在宽广孤寂的宇宙中我们是否是孤独的这件事情,科学家们争论了不知多少年,这个问题我们现在不予讨论,而是以已知为基础,作为我们生命唯一的承载者,我们的地球,目前却已经陷入了危机的征兆。

这段时期里,每一年我们世界的气温都在上升,可以说是一年比一年热,一年比一年极端。有识之士早就指出,不顾大自然而暴力使用资源,将垃圾废水随意排放,这样的行为最终会在未来给我们人类带来毁灭性的灾难。

根据之前在太空上给地球拍的照片我们可以看到,大地上枯黄的色块越来越多,就像是一块块难看的疤痕贴在我们蓝绿色的美丽星球上。

所以如何保护环境在现在已经成了不容忽视的重要问题,而我们祖国也在为我们下一代做考虑,积极开展可持续发展战略,提倡节能环保、低碳环保,提倡出行少开自家的小轿车,而是多使用公共交通工具,或者骑自行车出行。同时我们祖国积极推行新能源方面的发展,现在我们的大街上新能源汽车已经不像是几年前那样稀少得让别人感到惊奇的程度了,起码大部分公共汽车都已经改成了新能源模式,大大减少了城市里尾气的排放,让城市的空气质量指数上升了不知道。

我们作为新时代的新学生,在个人日常生活方面,也要做到时刻注意环保。首先垃圾不能随地乱丢,那些容易对人体对祖国土地造成危害的有毒有害垃圾更是除非必要尽量不适用。而是转而去使用哪些易降解的环保绿色材料。

生活中很多事情如果我们能够从小事做起的话,自然能够让我们的天空重新变得蔚蓝起来,让水中鱼儿能够再次欢快的游动。勿以善小而不为,有很多事情其实想要做好的话,只要我们每人出一点力就可以了,如果这些事情不从身边做起,向我们广大民众扩展支持的话,注定是无法实现的。

所以,请各位老师同学们跟我一起努力,做一个环保卫士!

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篇11:以端午节为话题的英语作文

全文共 1733 字

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导语:端午节是古老的传统节日,始于中国的春秋战国时期,至今已有2000多年历史。端午节的由来与传说很多,下面是yuwenmi小编为大家整理的有关端午节的作文,欢迎阅读与借鉴,谢谢!

Duanwu Festival (端午节, Duānwū Jié) is a traditional Chinese festival held on the fifth day of the fifth month of the Chinese calendar. It is also known as the Double Fifth.[citation(引用;引证) needed] It has since been celebrated, in various ways, in other parts of East Asia as well. In the West, its commonly known as Dragon Boat Festival.

The exact origins of Duan Wu are unclear, but one traditional view holds that the festival memorializes the Chinese poet Qu Yuan (c. 340 BC-278 BC) of the Warring States Period. He committed suicide by drowning himself in a river because he was disgusted by the corruption of the Chu government. The local people, knowing him to be a good man, decided to throw food into the river to feed the fish so they would not eat Qus body. They also sat on long, narrow paddle boats called dragon boats, and tried to scare the fish away by the thundering sound of drums aboard the boat and the fierce looking carved dragon head on the boats prow(船头)。

In the early years of the Chinese Republic, Duan Wu was also celebrated as "Poets Day," due to Qu Yuans status as Chinas first poet of personal renown(名声名望)。

Today, people eat bamboo-wrapped steamed glutinous(粘的) rice dumplings called zongzi (the food originally intended to feed the fish) and race dragon boats in memory of Qus dramatic death.

【参考译文】

端午节是中国的传统节日,在农历第五月第五日。它也被称为双第五。[引文需要](引用;引证)它已被庆祝,以各种方式,在东亚的其他国家也。在欧美地区,它通常被称为端午节。

端午节确切的起源尚不清楚,但一个传统的观点认为,这个节日是由中国诗人屈原(公元前340 BC-278。)战国时期的。他因沉溺于一条河而自杀,因为他对楚国政府的腐败感到厌恶。当地人知道他是个好人,决定把食物扔到河里喂鱼,这样他们就不会吃屈原的尸体了。他们长时间坐在狭小的龙舟上,并试图把鱼儿吓跑的齐鸣声船和凶猛的雕龙头船的船头鼓。

民国初年,端午节也被誉为“诗人节”,“由于屈原的地位,作为中国的第一诗人的个人名声。

今天,人们吃竹叶包裹糯米粽子叫粽子和赛龙舟来纪念屈原的壮举。

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篇12:英语话题作文

全文共 1567 字

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Youth is not a time of life; it is a state of mind; it is not a matter of

rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of

the imagination, a vigor of the emotions; it is the freshness of the deep

springs of life.

Youth means a temperamental predominance of courage over timidity, of the

appetite for adventure over the love of ease. This often exists in a man of 60

more than a boy of 20. Nobody grows old merely by a number of years. We grow old

by deserting our ideals.

Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul.

Worry, fear, self-distrust bows the heart and turns the spirit back to dust.

Whether 60 or 16, there is in every human being’s heart the lure of

wonders, the unfailing appetite for what’s next and the joy of the game of

living. In the center of your heart and my heart, there is a wireless station;

so long as it receives messages of beauty, hope, courage and power from man and

from the infinite, so long as you are young.

When your aerials are down, and your spirit is covered with snows of

cynicism and the ice of pessimism, then you’ve grown old, even at 20; but as

long as your aerials are up, to catch waves of optimism, there’s hope you may

die young at 80.

译文:

青春

青春不是年华,而是心境;青春不是桃面、丹唇、柔膝,而是深沉的意志,恢宏的想象,炙热的恋情;青春是生命的深泉在涌流。

青春气贯长虹,勇锐盖过怯弱,进取压倒苟安。如此锐气,二十后生而有之,六旬男子则更多见。年岁有加,并非垂老,理想丢弃,方堕暮年。

岁月悠悠,衰微只及肌肤;热忱抛却,颓废必致灵魂。忧烦,惶恐,丧失自信,定使心灵扭曲,意气如灰。

无论年届花甲,拟或二八芳龄,心中皆有生命之欢乐,奇迹之诱惑,孩童般天真久盛不衰。人人心中皆有一台天线,只要你从天上人间接受美好、希望、欢乐、勇气和力量的信号,你就青春永驻,风华常存。

一旦天线下降,锐气便被冰雪覆盖,玩世不恭、自暴自弃油然而生,即使年方二十,实已垂垂老矣;然则只要树起天线,捕捉乐观信号,你就有望在八十高龄告别尘寰时仍觉年轻。

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篇13:河南环境污染的作文

全文共 276 字

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我们家乡原来有一条清澈见底的小河,河底有许多五彩的鹅卵石,美丽极了,小鱼小虾在河里自由自在地玩耍。夏天到了,活泼的孩子们都来这里游泳、打水仗。冬天来了,河面上结了冰,孩子们又会来这里滑冰。

可是有一天,这幸福、美好的生活被打破了:河边建起了许多工厂,成天向河中排放污水、有毒的化学物质。于是,鱼虾离开了小河的怀抱,河底的鹅卵石被弄的肮脏不堪,小孩子们也不来这儿玩耍了。每当人们从这里经过时,就皱起眉头、捂住鼻子。河里的水把村里的庄稼都害死了。小河现在变得臭气熏天,鱼虾都不见了。孩子们也不再来这里玩耍了。

我建议大家保护自然环境,保护小河,保护我们的家园。

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篇14:家乡环境污染

全文共 403 字

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家乡变了,真的变了!天空变暗了;小鸟变少了;小河变浑了,就连鱼虾都“躲”了起来。

家乡变的原因还是冒滚滚浓烟的大-烟囱和污水。这几年来,工厂不断的生产,废气从烟囱里冒出来,污水不断从管道里淌出来。还有就是人们乱堆垃圾,把地球的“外衣”破坏了。就这样,家乡被污染了。

小河在哭泣,哭泣自己没有伙伴;小鸟在呼吁,呼吁自己美好的家园;地球在痛苦,痛苦自己没了外衣;

我知道,原来家乡不是这样的。原来的家乡天是一片碧蓝,河是清澈见底,鱼虾自由自在,鸟儿成群飞翔。而现在呢?现在的家乡已不是昔日的家乡了,现在……

小鸟呼吁人类:人类,请你们不要把树木砍伐,让我们无家可归,四处流浪。我呼吁人类:请你们不要把垃圾四处乱丢,让空气变的浑浊,请你们为自己想一想,如果哪一天空气没了,你们会怎么样?

让我们一起保护自己的家园,不要让家园的环境再变难看,而要让家乡的环境变得更美!一起行动起来,为自己创造一片蓝天吧!

[家乡环境污染 作文

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篇15:环境污染原因环境污染的根源

全文共 2362 字

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在十年前的中国,大气污染问题对于普通民众来说可能是个比较飘渺的话题。正如空气本身的性质一样,看不见摸不着却无处不在。而专家学者们则主要关注的是对于工业生产,燃煤发电所产生的硫氧化物的处理和汽车尾气中氮氧化物的处理。十年时间飞逝,随着中国经济的迅速发展,人们生活水平的不断提高,人们开始关注生活的质量问题。与其同时越发严重的正是中国以牺牲环境为代价发展经济所带来的环境问题,其中大气污染问题尤其明显。这几年来关于温室气体和温室效应的话题被讨论得沸沸扬扬,专家们各有其立场,但对于普通百姓来说,全球变暖问题似乎仍很遥远。对于温室气体所带来的全球变暖,海平面上升,冰川融化,动植物灭亡的问题,人们大多数是在电视新闻或报刊杂志上看到,恶劣天气的频发也并不是发生在世界每个角落。相比于温室气体所带的大气污染问题,人们开始关注更多的便是最近发生在北京,广州,武汉等多地的灰霾问题。尤其是在北京持续很久的灰霾严重影响了当地人们的日常生活和身体健康,更是引起了广大专家学者和普通民众的高度关注。而其实对于灰霾现象,国外专家学者很多年前便开始研究。

那么何为灰霾?灰霾是导致近地面大气浑浊的多种空气污染物的混合体。构成灰霾的主要污染物是硝酸盐、硫酸盐、有机碳、元素碳、等固体细颗粒物(PM2.5)和臭氧()、二氧化氮()、二氧化硫()、挥发性有机物()等气态污染物。灰霾往往与天然污染源的排放和二次污染污染物的形成有关,还与一定的气象条件和地形有关。我们现在最关注的同时也最难解决的室外污染物之一是可吸入颗粒物。可吸入颗粒物被分类为两种,直径小于2.5微米的颗粒物(PM2.5)和直径小于10微米的颗粒物(PM10)。虽然两种形式的颗粒物都对人类健康有极大的危害,PM2.5被普遍认为是更危险的,因为它的体积小,大约只有人类头发宽度的1/30。人们在呼吸时,PM2.5可以进入人类肺组织深处,甚至进入血液,造成严重的健康问题。同时更小的颗粒物在大气中可以有较长的停留时间。因此,PM2.5可以传播的更远,停留在空气的时间越长,影响更大的人口。PM2.5和PM10的主要来源包括机动车,电厂和其他工业源,以及生物质的燃烧。其中一个主要的来源是柴油为动力的车辆。这些污染源相结合,可以在城市或农村地区天空一片阴霾,而且往往发生在下午时段。

对于容易形成灰霾的城市,除了城市当地工业污染,汽车尾气的影响以外,特定的地形导致污染物的难以扩散也是灰霾形成的主要原因,像美国的洛杉矶,还有前面提到的受灰霾影响的北京和武汉都受到了地形的影响。洛杉矶市三面被群山包围,当地空气干燥,白天阳光充足。到了晚上,地表面冷却很快。地面附近的空气变冷,而上层空气都比较热,形成逆温。北京市位于华北平原的西北边缘,背靠太行山余脉和燕山山脉,面对辽阔的华北平原,东南距渤海约150公里, 地处暖温带半湿润地区,气候属于暖温带半湿润大陆性季风气候,四季分明,春季多风和沙尘,夏季炎热多雨,秋季晴朗干燥,冬季寒冷且大风猛烈。武汉市则居于内陆、距海洋远,周围地形如盆地,集热容易散热难,河湖多、晚上水汽多,城市热岛效应和伏旱时副高控制明显。通过比较以上3个城市的情况可以发现它们都是较大的工业城市,而且城市海拔较低,周围至少有一面是高地,都分布在低于南北纬50度的地方。这些地区夏季阳光明媚,天气温暖干燥。在城市的盆地地区,逆温现象十分普遍。夏季的阳光使地面温度升高,城市街道和建筑物迅速升温,与炎热的物体表面接触的空气温度升高。通过对流空气向上运动,但它却不能穿透逆温层,因为上面的空气温度更暖且密度更小。空气聚集,但连续的对流形成了垂直的循环,使空气完全混合在一起。从建筑物和汽车废气释放出的气体和颗粒也都聚集在逆温层下,通过对流把聚集的空气彻底混合。这样导致污染物无法快速扩散而聚集,大大增加了当地的污染物浓度。

城市内部灰霾的形成也同样受到了这种类似地形的影响,学者称它为街谷模型。随着城市化的加速,城市及城市周边的自然生态系统逐渐被人工生态系统取代,取而代之的是钢筋混凝土浇筑的高楼与马路,很容易形成城市街道峡谷。这种城市街道峡谷是指两侧有连续,高大建筑物的狭长城市街道空间。在这种地形下,上层大气在进入城市时,风速迅速降低并产生特殊的湍流,使街谷内的流场完全不同于上层大气。而气流对污染物具有显著的运输、稀释、和扩散作用,因此,对城市街谷内污染物的浓度、分布有着很大影响。北京的灰霾现象正是因为污染物积聚难以扩散而导致北京的灰霾持续了如此之久。有相关专家的研究发现,除了通过控制排放源,增大扩散和增加沉积率来降低大气中污染颗粒物的浓度以外,地面的性质也影响着颗粒物的浓度。有研究表明植被对城市空气质量能有接近5%的提高。在城市,尤其是在城市街谷地带种植植被能通过增加沉积作用而降低60%的可吸入颗粒物(PM)浓度和40%的二氧化氮(NO2)浓度。因此,通过对植被的合理利用能过创造一个有效的城市污染过滤膜,对密集城市地带空气质量的提高有着快速有效并且持续性的影响。

灰霾问题不是一个暂时性的问题,相反它是一个长久的问题,从它如何形成,加剧到我们如何解决治理并消除都需要一段很长的时间。

灰霾现象,它只是地球环境污染的一个缩影。我们更应该探究它的根源问题,什么才是它形成的根源,什么才是它加剧的根源。我们没法通过改变天然的气候和地形来解决城市灰霾问题,但我们可以通过减少排放源,通过增加植被,加强城市绿化来阻止灰霾的加剧。人类的不断进步使得人们在追求高科技的同时却忘记了自然本身的无穷力量。越来越高的大楼,越来越发达便利的交通,相反的却是城市越来越差的生活环境。在灰色的钢筋水泥世界里生活久了,人们是否会怀念那晴朗的蓝天,向往呼吸新鲜的空气和在那充满生机的绿色大自然世界里生活。

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篇16:我的家乡污染环境

全文共 534 字

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我的家乡在荆州。平时,我对家乡的环境也不大了解 。这几天,我们班组织同学们进行了一次综合实践活动,对家乡的环境进行了一次调查,调查的主要对象是荆州的护城河。这次调查让我受益匪浅。

通过实地调查和上网查资料,我了解到以前的荆州护城河污染十分严重。护城河两侧共有二十多个排污口,每天城区的生活及工业污水排入护城河,直接排入的总污水量约5万立方米。因此,河水变成了浑浊的墨绿色。居住在附近的居民和过往的行人也很不爱护环境,把垃圾随随便便仍进河里,使河水的污染进一步加重。由于护城河是死水,无法流动,河底淤泥非常多,水面上漂浮着大量的蓝藻,河底的沉积物散发着臭味。人们从这里经过,都要捂着鼻子,加快脚步。

护城河的污染成为了荆州人的心中之痛。在广大市民的期盼下,市政府对护城河进行了彻底的治理。经过清淤、补水、截污、绿化……护城河面貌焕然一新。

如今的护城河碧波荡漾,波光粼粼。护城河宛如一面绿色的大镜子,映出了蓝天白云和古老城墙的美丽倒影。几只鸭子在水面上嬉戏,几条小船在小河上悠闲地驶来驶去,真可谓“舟行碧波上,人在画中游”。河岸上杨枊依依,与古老的城墙交相辉映,美不胜收。

通过这次的环境调查,我增强了环保意识。我们一定要好好保护环境,让我们共同的家园天更蓝、水更清、景色更美!

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篇17:以校规为话题的英语作文

全文共 521 字

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导语:俗话说:无规矩不成方圆,每个学校都有自己的校规,你们学校的校规是什么呢?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!

Our school has school rules, and our class also has class rules. We cant have breakfast in the classroom. Our teacher says we will make our books become dirty if we eat in classroom. Then it becomes the class rules in my class. If anyone breaks this rule, he will be punished. So no one in my class dare to have breakfast in the classroom.

【参考译文】

我们学校有校规,我们班也有班级规定。我们不能在教室吃早饭。老师说如果我们在教室里吃饭,我们会弄脏书本的。然后,它成为类规则在我的类。如果有人违反了这项规定,他将受到惩罚。所以我们班没人敢在教室里吃早饭。

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篇18:如何爱护环境英语作文

全文共 822 字

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Now in some places of our country, a number of people have been cutting down the trees in the forests because they need wood and more farmland. The areas of forests are getting smaller and smaller. Some scientists say that there will be no vast forests in 20 or 30 years. It is really a terrible thing. Where the forests disappear, dust storms will occur occasionally. The weather will get hot and dry. The whole earth will become a big desert. A lot of plants and animals will disappear.Crops will not grow anywhere. Life will be difficult for everyone. The human beings will be punished for their forest-destroying activities.

Therefore, we should realize the importance of taking care of our forests. We should do our best to protect our living environment and keep our mountains green,the water clean, and the sky blue.

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篇19:英语话题作文范文:环境保护

全文共 1236 字

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假如你是李华,现任你们学校的学生会主席。你将代表学生会起草一份倡议书,号召全校同学行动起来,为环保运动做出自己的努力。同时下周六学校将组织同学在全市进行环保宣传活动,征召志愿者到校学生会报名。

注意:(1)短文应该包括以上所提供的主要信息,可适当发挥;(2)词数:120左右;(3)倡议书格式以提供,不计入总词数;(4)参考词汇:征召(新人) recruit。

15 May, 2010

Dear brothers and sisters,

____________________________________________________________________

____________________________________________________________________

Yours sincerely,

Li Hua

【参考范文】

15 May, 2010

Dear brothers and sisters,

On behalf of the University Students Union, I, the Chairman of the Union , am earnestly calling for your active participation in our environmental protection campaign. It is the duty of every global villager; man just can not sustain his glorious civilization without a rewarding environment, which will be possible only if man makes considerable efforts to protect the environment.

Do you cherish precio us opportunities to volunteer in our joint efforts in environmental protection? Here is a great one not to be missed by any enthusiastic youth; Right next Saturday, our university is to run a publicity campaign to advocate environmental protection across the city. The University Students Union will be in charge of recruitment of volunteers. Lets join our hands and take action immediately.

Yours sincerely,

Li Hua

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篇20:以互联网的使用为话题的初中英语作文

全文共 796 字

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In recent years, people are developing aninseparable relationship with Internet. As is known toall, it is convenient for us to click the mouse whensurfing on line, either to entertain ourselves or to meet the works needs.

On the one hand, no one denies that Internet is currently one of the most useful media inour daily life. As a college student, I get on line every day to exchange information through e-mails with my net friends. But on the other hand, a good many people admit that they are toomuch addicted to Internet to maintain a regular and wholesome lifestyle.

Thus, it is necessary for us to use Internet in a reasonable way and restrain fromoverindulgence. After all,Internet is invented to enrich our life, and to improve the efficiencyof our work rather than shackle us with a chain.

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