关于动物的英语作文带翻译(优秀20篇)

Many animals are in danger of dying out. As is shown in the chart, we can

see the number of animal species decreases faster and faster and this trend will

continue. From 1980 to 2010, at least 1 million animal species have disappeared.

Worse still, more and more wild animals are in great danger. It is not a piece

of sensational news; it is a fact, a harsh reality. Unfortunately, we may not

see these animals in the near future.

From the second picture, we can find some reasons. Why is the number of

animal species declining year by year? Apparently animals have become victims of

fashion industry. Animal skin has been used to make fashionable clothes and

these clothes sell at a high price. So some greedy people begin to kill animals

in a large quantity. This irresponsible behavior not only breaks the balance of

nature but also endangers the living environment of human beings.

As far as I am concerned, something must be done to stop this illegal

action. We believe "no buying, no killing". First, we must make concerning laws

to protect these animals in danger. Second, we must take some measures to

protect animals effectively. Animals are our friends and part of our

environment. Third, we should raise peoples awareness to protect animals and

our environment. In this way, we can build a harmonious society and ensure a

sustainable development.

my plan of next year

a new year ，a new start，when i stand on the edge of a new year，i can’t help thinking about my plan of next year.

but ，what i really decide to do is that i must make good of anytime i can spare though it seems impossible. while，i will do my best to live up with what i have planned，and the result will prove it！

我明年的计划

新的一年，新的开始，当我在新的一年的边缘立场，我不禁在想我明年的计划。

正如古人云：“。好开始是成功的一半“，所以我决定，我应该是在工作，而另一些性传播疾病就会放松，然后，在开始时，我比其他人更快，我当然会得到比别人更好的结果。

但是，我真正决定做的是，我必须利用好，我可以随时备用，虽然它似乎是不可能的。虽然，我会尽我所能，用我生活已计划了，结果将证明这一点。

One Sunday my mother (Mother) had (made) me take my little young brother to

the a trip to the country。 She bade me take good care of him。

While we were walking along the road， the sun was shining brightly and the

breeze was blowing gently。 We saw the beautiful flowers smile (smiling) at us

and heard the birds sing (singing) their sweet songs on the trees。 The scenery

was indeed very pretty (beautiful)。

When we felt tired， we returned home。 We saw Mother (our mother) wait

(waiting) for us at the door。

有一个星期日，我母亲叫我带小弟弟去乡村游历。她吩咐我要好好照料他。

当我们沿着道路行走的时候，太阳灿烂地照耀着，微风轻轻地吹着。我们看见美丽的花儿对我们微笑着，并听见鸟儿在树上唱着悦耳的歌曲，风景实十分美丽。

当我们感觉到疲倦的时候，我们就回家了。我们看见母样正在门口等候我们。

呼吁保护动物英语作文1

Many wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. For example, with the developmet of cities, the using of insecticide and serious pollution, their living areas have become narrowcr and narrower. Many of the wild animals, now are confronted with food crisis. At the same time, man is killing off species just for getting their fur, skin, horns, teeth and meat.

In order to protect our resources of ecology, people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty. There fore, measures of the following should be taken: pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life, reserves.Only if we human beings take some drastic measures can wild animals be preserved.

呼吁保护动物英语作文2

Animal Protection

Animal is the friend of mankind, is an important part of the natural ecosystem. It is human precious naturalresources. Protect animals to maintain natural ecological balance has important significance.

But now many animals are facing the danger of extinction.With the development of society, pesticide used and serious pollution, city sewage .The wild animal living area is becoming increasingly narrow. Many of the animal is facing a food crisis currently . Whats more, in order to obtain wild animal of precious materials, humans are killing animals.

In order to maintain ecological balance, we should take some effective measures to protect animals.We should develop pollution standards to reduce emission of toxic substances, prevent the killing of some rare animals strictly. We can also establish a national park as a wild animal protection area. The most important thing is to improve people s knowledge of animal care.

Let us join hands in creating a harmonious coexistence of human and animal beautiful homes!

呼吁保护动物英语作文3

Animals Need Protecting

Animals are natural resources that people have wasted all through our history. Animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. Thousands of kinds of animals have disappeared from the earth forever. Hundreds more are on the danger list today. About 170 kinds in the United States alone are considered in danger.

Why should people careBecause we need animals, and because once they are gone, there will never be any more. Animals are more than just beautiful or interesting. They are more than just a source of food. Every animal has its place in the balance of nature. Destroying one kind of animal can create many problems. For example, when

farmers killed large numbers of hawks, the farmers stores of corn and grain were destroyed by rats and mice. WhyBecause hawks eat rats and mice, with no hawks to keep down their numbers, the rats and mice multiplied quickly.

Luckily, some people are working to help save the animals. Some groups raise money to let people know about the problem. And they try to get the governments to pass laws protecting animals in danger. Quite a few countries have passed laws. These laws forbid the killing of any animal or plant on the danger list. Slowly, the number of some animals in danger is growing.

Last weekend ,I went to Beijing I love there .The summer Places is so beautiful and we went to Wangfujing .Though there are lots of people and the things are too expensive ,many people buy things in there.I bought a pair of beautiful shoes in there.I love Beijing .There are too beautiful!

I am good at writing and I am interested in travelling around the world,So I want to become a reporter in the future.

As a reporter, I can communicate with many different kinds of people. I can show the real world to readers.

As a metter of fact, to be a good reporter is not easy.

It is a challenge for me.

Now I must study hard and lay a solid foundation. Also I must build up my body.

我善于写作，也对环球世界也是非常感兴趣，因此，未来我想成为一个记者.

作为一个记者，我就可以和不同种类的人进行交流，我也能够把真正的世界展现在读者面前.

事实上，成为一个好记者是不容易的，对我来说是一个挑战.

现在我必须努力学习打下坚实的基础，还有必须要锻炼身体.

Today was realiy boring.I went nowhere,I just stayed at home because the

weather was rainy.The rain was raining heavily in the sky.And there was much

dirty water on the ground.

今天可真无聊。我哪儿也没去，就呆在家里，因为今天是雨天。天空中下着倾盆大雨,而且地上汇集着许多污水。

I watched TV,but all the shows were long and long soap operas.I didnt like

them!Then I read a book,but they were too difficult for me.So I couldnt get

it!Computer games were also difficult and boring...

我看了电视，但是所有的节目都是长长的电视连续剧，我不喜欢它们!然后我读了一本书，但是它对我来说太深奥了，我无法理解!电脑游戏也很困难而且无聊……

In short,the day was boring.I flet so bad!

总而言之，今天真无聊。我感觉太差了!

it was mother’s day. sun zheng thought he should do something for his mother. he decided to help his mother do some housework. after school he went to a shop to buy some food on his way home. when he got home, he did his best to cook some nice food,though he couldn’t do the cooking well. thenhe cleaned the room. he felt very tired, but he was very happy. when his father and his mother came back and saw the clean rooms and dishes which weren’t so nice, they were very happy.they had their supper together. his mother said, "thank you,my child!"

今天是母亲节。孙峥觉得应该为妈妈做点事，他决定帮妈妈做些家务。放学回家的路上，他去商店买了食品。到家后，他尽全力做些好吃的，尽管他并不擅长烹任。做完饭，他又打扫了房间。他感觉有些累，但仍然很高兴。 当父母回来后，看见干净的房间和并不太荚味的菜，他们依然很高兴。他们一起吃了晚饭。妈妈说：“谢谢你，孩子。”

today is mother’s day. i know some of my classmates are going to help their mothers with the housework, others .are going to buy some flowers for their mothers. i want to say to her that i love her very much. but as a boy, it is a bit difficult for me to show my heart. i think only girls can do that. my mother is very kind. she takes care of me day and night. she spends little money, but buys anything for me that i need. this time i must show my love. i am going to give her a card and write like this, "i love you, mother!" i am going to put it under her pillow.

今天是母亲节。我知道一些同学打算帮妈妈做些家务，还有一些同学打算给妈妈买些花。我只是想对妈妈说一声，我非常爱她。但是对我来说这样表达我的情感有点儿难，因为我是个男孩。我觉得只有女生才这样做。 我妈妈是个非常善良的人。她对我照顾得无微不至。她自己很少花钱，但能给我买我需要的任何东西。 这次我一定要表示我对她的爱。我打算送她一张写有“我爱你，妈妈”的卡片，我还打算把它放在她的枕头下面。

[今天是母亲节英语作文及翻译

早晨，我被噼里啪啦的炮声惊醒了，原来，今天是元霄节啊，我飞快的爬起来，和妈妈去姨姨家过节。

In the morning, I was produced crackling of guns to awaken, turns out today

is The Lantern Festival ah, I climb up quickly, and her mother went homes

feast.

在姨姨家，我和妈妈度过快乐的一天。

In the homes, my mother and I spent a happy day.

晚上回家时，刚走出姨姨家，我和妈妈就被突然响起的炮声包围了，妈妈吓得捂住耳朵躲在一辆小车的后面，而我却兴奋地直往前冲，当炮声小一点的时候，我妈妈才慢慢地探出头来，我一把拉住妈妈的手向大门跑去，费了好大功夫，我们才逃出炮的包围圈，我们坐上一辆出租车，这才松了一口气。

Go home at night, fresh out ofs home, my mother and I were sudden sound of

guns surrounded, mother scared to cover your ears hiding in a small car back,

and I was excited straight forward blunt, when guns small bit of time, my mother

just slowly explore successful in career, I a pull a mothers hand to the gate

ran, and made an effort, we just escaped from the gun battalion, we took a taxi,

this just breathe a sigh of relief.

啊!这个元霄节过得真刺激呀!

The Lantern Festival is really exciting!

★高中英语日记100字★

★初中英语日记范文★

★小学英语日记带翻译★

★儿童节英语日记★

On Christmas morning， the children wake up very early. Some even turn on the light at two o‘clock， and most of them are awake by six o’clock although it is not light in England for another hour or two at this time of the year.

Children look for their presents ， and the young ones play while the dinner is prepared. At about one o‘clock in the afternoon， the Christmas dinner is brought in . The turkey or chicken is quickly eaten . Children search in their Christmas pudding for new coins which are hidden in it . The rest of the day is full of games and eating until the happiest of all Christmas hollidays comes to an end.

在圣诞节的早晨，孩子们很早就起床。有些人甚至在两点钟的时候开灯，但大多数人还是在六点钟醒的，虽然在英国这个时间就算再过一两个小时也还没有天亮。

在准备晚宴的时候，孩子寻找自己的礼物，年轻的玩耍。在下午约一点钟的时候，圣诞晚餐开始。火鸡或鸡肉被迅速吃掉。孩子们在他们的圣诞布丁寻找哪个隐藏了新币。在一天剩下的时间都充满了游戏和吃的，直到最幸福的各个圣诞假期结束。

我们都邻国。好邻居胜过远亲。这是共同的，我们可能会与遇到困难.当我们好邻居，他们将永远来帮助您。邻国应该在与对方。

我的邻居，有一个女儿。我们是同龄，但我们不要? T研究在同一所学校。晚上我们总是一起做功课。她擅长数学，我很擅长英语。因此，我们经常互相帮助来自作文

Good Neighbours

We all have neighbours. A good neighbour is better than a distant relative. It is common that we may meet with difficulties.When we have igood neighbours, they will always come to help you. Neighbours should get on well with each other.

My neighbour has a daughter. We are of the same age but we don~t study in the same school. In the evening we always do homework together. She is good at maths and I am good at English. So we often help each other.

Hello, everyone. My name is Kelly. I am friendly and honest.I am good at English and maths. I like surfing the internet,playing computer games, watching TV and traveling. I also like playing table tennis and I am good at it ,too. I often play table tennis with my friends on weekends. And I want to be a famous table tennis player when I grow up. What I like most is to see the seagulls flying freely in the sky so I often go to the sea in summer. My favourite colour is white because I think white is symbolize purity.

大家好 我的名字叫KELLY .我很友好、诚实.我擅长英语和数学. 我爱上网、玩电脑网络游戏、看电视 和旅游.我也喜欢打乒乓球.我经常和朋友们在周末打乒乓球,长大了我想当一个乒乓球运动员.最喜欢在海边看着海鸥自由自在的飞翔,因此在夏天我经常去海边.白色是我的最爱.因为我觉得白色是纯洁的象征.

Dear Tom,

How are you doing? Currently, 为了欢迎新同学，晚会在我们学校被举办。

inordertowelcomethenewstudents,aneveningpartywillbeheldinourschool. As the chairman

of the Students’ Union, I’m writing to invite you to join us.

Here is a 简单(简洁)安排briefschedule . First, it

will be held in the school meeting hall from 7:00 to 9:00 p. m. next Sunday.

Additionally, 将会有很多被老师和学生们所呈现present的很棒的表演(there be句型)therewillbemanywonderfulperformancespresentedbytheteachersandstudents, such as singing, dancing, performing plays and so

on.

Everyone is longing for your coming, and

如果你能给出一个表演，它将会是更令人欢呼的。itwouldbemorecheerfulifyoucouldgiveaperformance.

I sincerely hope that you can accept our invitation and I have the

confidence that we students would be extremely delighted to see you.

请让我知道你的决定如果方便的话。Pleaseletmeknowyourdecisionifitisconvenientforyou.

I am looking forward to your reply.

Yours,

Li Hua

Hello everyone.

Now let me talk about myself.

My name is _____.I was born in _____.There are _____people in my family, my father is a _____, my mother is a _______.And as everyone know,Im a student.Everyone has his own interests.As for me,I like reading books,playing basketball,listening to the music and so on.Now today we are in the same class,I hope we will get on well with each other.Thanks.

大家好。

现在让我来介绍一下我自己

我的名字叫______。我出生在_______。我家有_______口人，我的爸爸是一个________,我的妈妈是_______。那么就如大家所知，我当然就是一个学生了。每一个人都有他自己的兴趣。至于我，我喜欢看书，打篮球，听音乐等等。今天我们相聚在同一个教室，我希望我们将会相处愉悦。谢谢大家。

What a fine day today !I’m very happy in this fine day 。 Beaucse today I don’t have to do my homework and I can play with my good friends 。There is lots of snow now ，so we make a sonw man 。That’s really intersting 。We play with snow to about 6:30 。Of couse I must go home now。 What a fan day !翻译：多么好的天气阿！在这样的好天气里我十分高兴，因为这天我不用写作业，并且能够和朋友们出去玩。那里此刻有很多雪，所以我们堆了一个雪人。那真的很搞笑。我们玩雪，一向到晚上6：30。当然此刻我务必回家了。 多么搞笑的一天啊！

我家有只小狗，是我妈妈在我生日的时候送给我的生日礼物，我很喜欢它，妈妈给它取了个可爱的名字叫旺旺旺。

My family has a puppy. Its my mothers birthday present to me on my birthday. I like it very much. My mother gave it a lovely name.

每天我放学回来第一件事就是拿东西去喂旺旺，我妈妈说过，要和小狗做朋友，就必须要好好的对它。

Every day I come back from school, the first thing is to take things to feed Wangwang, my mother said, to be friends with the puppy, it must be good to it.

所以，我平时还会帮它洗澡和带它出去玩。旺旺可调皮了，一开始每次帮它洗的时候，它总是不愿意，每次都会把我的衣服弄湿，但我也没生气，妈妈说过，多帮它洗几次它就会习惯了。

So I usually shower it and take it out to play. Want to be naughty, and at the beginning of each time to help it wash, it is always reluctant to, every time I wet my clothes, but I did not angry, mother said, and more help it wash a few times, it will get used to it.

每天晚上吃完饭，我就会牵着小狗和妈妈一起到外面散步，带它到公园和其他的小狗仔一起玩，可是旺旺太淘气了，整天欺负隔壁的阿王，妈妈就说，以后不带它出去了。旺旺虽然有点淘气，可是我还是很喜欢它，我要永远和它做朋友。

Every night after dinner, I will be holding the dog and her mother went to the outside for a walk, take it to the park and other puppies playing together, but I was too naughty, bullying next O king, mother said, dont take it out. Wangwang although a little naughty, but I still like it, I will always be friends with it.

Christmas Day

圣诞节

Christmas Day falls on the twenty-fifth of December. It is a very happy day for many boys and girls. Before the term ends in some schools, the children act a nativity or “birth” play, showing how Jesus was born in a stable.

12月25日是圣诞节。对许多男孩和女孩来说，这天是个非常开心的日子。在某些学校，学期结束前，孩子们会表演有关（耶稣）诞生或出生的戏剧，用来（向大家）展示耶稣是如何在马厩里出生的。

On the twenty-fourth of December, all children are very excited. Usually they are sent to bed early so that their parents can get the presents ready. The younger children think that Father Christmas will come down the chimney or fireplace, so they hang up a sock for him to put presents in. The greedy ones even hang up a pillow-case or a sack to try to get more presents. Later that night, father or mother will put presents in the sock, and leave others at the side of the bed.

在12月24日这天，所有的小孩都很兴奋。他们常常被（父母）早早地赶上床去睡觉，以便他们的父母能准备好礼物。年幼一点的小孩认为圣诞老人将从烟囱或壁炉里下来，所以他们挂起袜子，方便圣诞老人把礼物放进去。有些贪心的人，为了能得到更多的礼物，甚至把枕套或布袋挂起来。晚一些时候，爸爸或妈妈将礼物放进袜子，并把其他礼物放在（孩子们的）床边。

On Christmas morning, the children wake up very early. Some even turn on the light at two oclock, and most of them are awake by six oclock, and the young ones play while the dinner is prepared. At about one oclock in the afternoon, the Christmas dinner is brought in. The turkey or chicken is quickly eaten. Children search in their Christmas pudding for new coins which are hidden in it. The rest of the day is full of games and eating until the happiest of all Christmas holidays comes to an end.

圣诞节的早上，小孩们很早就醒来了。一些人甚至在凌晨两点开灯，但大多数小孩会在六点醒来，孩子们在（大人们）准备晚餐的时候玩耍。下午一点，圣诞大餐出炉了。火鸡或鸡腿总是很快被抢光。孩子们寻找着属于他们的圣诞布丁是为了确认金币是否有藏在里面。在剩余的时间里，（人们）便是玩游戏和吃食物直到最开心幸福的圣诞节结束。

寒假即将到来，请根据下面提示，写一篇70~90字的寒假计划。

提示：rest, Spring Festival,visit,help parents,play with friends, do homework,mend up English,prepare for new term. Plan for the winter Holiday

winter vacation plan

How time flies（时间过得真快）,unconsciously(不知不觉地） the next winter vacation （寒假）will soon come.In order to improve（提高） myself as well as enjoy a happy holiday,I made the winter vacation plan.

Firstly i want to continue with my study,i think study is a life process,so no matter what the situation I am in,i will look for chances to continue it.I have bought several new books ,including those books on my major(专业）and some novels ,I will try to finish reading them in the holiday and write notes.

Secondly,since it is the holiday,I will share it with my family and friends .You know the spring festival will soon come, I believe I would chatting and play games with my friends and family .I think I will enjoy the vacation.

寒假计划

时间过得真快，不知不觉得下一个寒假就要到了，为了提高我自己同时快乐的度过假期，我制定了寒假计划。

首先，我会继续学习，我认为学习是一种终身的过程，所以不管我处在那种情况之下，我都会寻找机会学习。我已经买了一些新书，这些书有的跟我的专业有关，也包括一些小说。我将努力读完他们并写下读书笔记。

其次，既然是放假，我将和我的家人朋友一起度过，你知道春节就要来临了，届时我会和我的家人朋友一起聊天啊，玩游戏啊等等，我相信我定会度过一个快乐的假期。

[寒假计划英语作文附翻译

Which place we look forward to university, the number of students of senior three. University life, every high school students dream of want to experience. At least I was at that time. But, to be honest, the university for me at that time is a kind of imagination of good, but how, I want to now I didnt have a certain understanding to him.

In college, we wont have the teacher make the teachings and anticorrosive tireless explains. Wont have too many exercises and tests every day; Dont every day in order to score, ranking and anxious, upset... In the experience of college life this month, there is such a thing let me more impressive: in the first class of the university, there are two girl for a few minutes late, according to the habit of playing before the report into the classroom. But then the teacher said: "in the university, if you be late for class or something you want to leave early, you dont have to report, just quietly in and out from the back door, it is good to do not affect you..." After this, I also met in high school even dare not even think about other things. Can at any time in and out of the dormitory and the school, for example, because of the need to accomplish something to skip class, etc.

So, I concluded that university, is a completely on the process of consciously. If high school we or a chick, so we can say of university has been growing up, away from the shelter of parents, away from the teachers supervision, the rest of the only one to do the master of himself.

So, now we are going to manage themselves, their planning their beautiful university life, and ensure that the future can smile about their college life.

At the university of the second characteristic is to have more time and space, the university will have a class from 5 points to the dormitory in the morning until 10 PM back rest; Also wont because like to see a dream of red mansions but afraid to be the teacher found and hide things, and more importantly, there are all kinds of activities in the university for you to participate in and experience, and these are considered in high school is a waste of time. In fact, we can learn much knowledge from these things - and without the knowledge of the textbook, learned a lot of experience or lessons, learn from the university of rich and colorful...

So, I think, is more important than knowledge ability, and ability to training needs a process, the university is such a good process.

大学，多少高三学子向往的地方。大学生活，每一个高中生都梦寐以求的的想去体验一番。至少当时的我是这样。但是，说句实话，大学对那时的我来说只是一种想象中的美好，但究竟如何，我想现在的我才对他有一定的了解。

在大学，不会再有老师苦口婆心的教诲和防腐不知疲倦的讲解;不会有每天做不完的习题和试卷;也不会天天为了分数、名次而焦急、苦恼……在体验大学生活的这一个月中，有这样一件事让我印象比较深刻：在大学的第一堂课上，有两个女生迟到了几分钟，按照以前的习惯打报告进教室。但后来老师说：“在大学中，如果你上课迟到或者有事想要早退的话，你不用打报告，只需悄悄地从后门出入，不要影响大家就好……”在这以后，我也遇到过其他在高中甚至想都不敢想的事情。比如可以随时出入宿舍和校门，因需要完成某事要逃课等。

所以，我总结出：大学，是一个完全靠自觉的过程。如果高中的我们还是一只雏鸟，那么大学的我们可以说已经长大，远离了父母的庇护，远离了老师的督促，剩下的只有自己做自己的主人。

所以，现在的我们要自己管好自己，自己规划自己美好的大学生活，并自己保证今后能够笑着谈起自己的大学生活。

大学的第二个特点就是有更多的时间和空间，大学中绝不会有从早上5点出宿舍上课直到晚上10点才回去休息的情况;也不会因为喜欢看《红楼梦》但怕被老师发现而东躲西藏的事情，更重要的是，在大学里有各种各样的活动等着你去参加和体验，而这些在高中都被视为纯属浪费时间的事情。其实，从这些事情中我们也能学到许多知识——课本里并没有的知识，学到许多经验或是教训，学到大学的丰富多彩……

所以，我认为，比知识更重要的是能力，而能力地培养需要一个过程，大学则是这样一个很好的过程。

Xiaomei and I went out this morning. We went to the city centre. We went

window shopping, and then we had lunch at the restaurant. We didnt buy anything

as we didnt have much money, but we still had a wonderful time.

今天上午我和小梅出去了。我们去了市中心。我们去逛街然后到餐馆吃饭。我们没有没东西，因为我们没有多少钱，可是我们过的很开心。

When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, thats whats supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So whats a hungry bear to do?

Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.

"Weve had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."

University of Alberta biologist Nick Pilfold.

"And weve known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?

To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitobas Polar Bear Alert Program.

While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.

"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and thats going to help supplement against longer ice-free seasons, that really doesnt show up in the data."

The problem is that polar bears evolved to rely on the marine diet.

"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; theyre highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing thats going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when theres sea ice."

Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, cant last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species survival in doubt.

北冰洋在秋季结冰以后，北极熊就会出发去寻求它们最喜欢的食物：富含脂肪的海豹和胡子海豹。海冰在夏季开始融化断裂。这使北极熊在夏季无法吃到美味的海豹，所以它们进入禁食期。至少，情况应该是这样。但是由于地球变暖，温暖的无冰季节越来越长。那饥饿的北极熊要怎么办?

科学家曾经认为，北极熊可能会转向陆地上的食物来补充它们对鳍足类动物饮食的需求，进而生存下去，这些陆地食物包括雪雁、雪雁蛋和北美驯鹿。

“文献中有过这类辩论，即在寒冷融化时陆地食物是否能满足北极熊的营养需求。”

尼克·皮尔福德是加拿大阿尔伯塔大学的生物学家。

“通过上世纪70年代初的研究，还有早期的探险者日志，我们很早以前就知道，北极熊会以陆地食物为食。但是辩论的焦点在于，这些食物是否能增加北极熊的能量。”换句话说，这些替代食物能否为北极熊提供足够的营养，弥补不能进食海豹带来的损失?

为了解开这个疑惑，皮尔福德及同事对西哈德逊湾荒野地区的北极熊在无冰季期间每天失掉的体重进行了估算，从表面上看，北极熊在这段时间食用了陆地食物。随后，他们将这一数据与通过马尼托巴北极熊预警计划暂时捕得的北极熊所失掉的体重进行了对比。

在被关期间，北极熊不吃东西。它们的体重每天大约下降1公斤。虽然野生北极熊能享用北极“小吃”，但是它们的体重每天也同样会下降1公斤。这一研究结果发表在《生理学和生化动物学》期刊上。

“显然结果表明，陆地食物不能为北极熊提供足以抵消大量损失的能量。所以，北极熊可以从食用海冰下面的食物转向食用陆地食物，并帮助它们对抗日益延长的无冰季这个观点，并没有在这项数据中得到证明。”

问题是，北极熊进化成了依靠海洋食物的动物。

“陆地食物以蛋白质和碳水化合物为基础，而北极熊需要的食物以脂肪为主。脂肪是这些熊真正需要的东西;它们高度适应的情况是，将脂肪吸收进它们的系统中，然后把这些脂肪放在身上以增加体重，这样它们之后就可以依靠这些脂肪来度过禁食期。唯一能提供给北极熊这种脂肪的就是海洋哺乳动物。但是它们只能在有海冰时食用到这些海洋哺乳动物。”

成年北极熊可以8个月不进食。但是小一些的未成年北极熊已经不再被哺育，它们必须要去猎食，可是它们不能在漫长的无冰季期间一直不进食。所以，随着北极地区变暖，较小的北极熊将会大批死亡。这使这些物种的生存成为问题。