知道理由的.英文：
know why
know是什么意思：
v. 知道，了解，懂得；认识，熟悉；认出；体验；见到过，听到过
Learn not and know not不学无术
Know/not know what is most important and act accordingly能[不能]按轻重缓急行事
Do you know that lady?你认识那位夫人吗？
Do you know the Hallelujah Chorus?你知道哈利路亚合唱曲吗？
Few know and few care.很少有人知道，也很少有人关心。
why是什么意思：
adv. （用作疑问副词）为什么，（用做关系副词）为什么
n. 原因，理由
int. 咦，哎呀，哦，当然，唔
Why are you in such a hurry?你为什么这样急呢?
Is this why the Yen is so strong?这是日元如此强劲的原因吗？
Why, I was fast asleep.怎么，我睡得很熟的呀。
Why is Leo behind time?利奥为什么迟到了？
Why not fire away at the engineer?为什么不向工程师提出问题?
环境污染原因英文作文一
how to save environment? i think we should do the followings: first, it’s best to ride a bike to school, don’t take a bus or a taxi. second, i will remember to turn off the lights when i leave the classroom. third, in my free time, i will collect the empty bottles and waste paper for recycling. the fourth idea is turning off the shower when i ‘m not using it. fifth, it is imporment to save water and money. also, i won’t spend too much money on expensive things. last, we had better not cut down the trees, we have to take care of the trees . i’ll try my best to save the energy, i hope i can do something for our country.
the environmental protection is the most major problem which in the modern life the humanity faces. must solve this problem must start from foundation. first, must massively propagandize, enhances people's consciousness with understanding, strengthens the environmental protection consciousness. next, must carry on waste recovery use, reduces to forest-tree's felling. also must strengthen to white pollution processing, little uses the plastic product. finally, must make improvement to clean aspect. causes the city's appearance to be neater. for earth's tomorrow, we must start from the now diligently, will want the well local constable to protect the environment. to this us proposes as follows suggests: implementation trash classification packed in bags. like this not only can reduce the environmental sanitation worker's work load, but also can even better basically arrive makes use of waste, to reduce the pollution, saves the resources.
环境污染原因英文作文二
air pollution comes from factories, power stations and cars. chemicals in the smoke from power stations cause a lot of damage. they can travel hundreds of miles in the wind before falling to the ground in the rain. but this "chemical rain" gradually destroys trees in the forests and kills fish in the lakes. in germany, over 50% of the country’s trees had been damaged by the year 1986.
time and time again there are serious accidents that pollute the air. in 1986 there was a bad accident at a nuclear power station in russia. a cloud of radiation crossed the whole of europe. it is said that 125,000 people died in russia as a result of illnesses caused by this accident.
in 1984 there was a serious accident at a factory in india and a cloud of dangerous gas covered the town of bhopal. over 2,500 people were killed that night, and hundreds of thousands of people were injured. many of the injured lost their sight.
环境污染原因英文作文三
As we all know, Beijing is facing the air pollution, a kind of environment pollution. Now Beijing is also famous of hazy weather, which is harmful to people’s health because of PM2.5 and PM10.
Why is our capital suffering the hazy weatherIn my view, Beijing is a center of economy, culture and politics, so she has a heavy traffic. As a result, there are a lot of cars here, then the exhaust of them become a part of reason of the air pollution. Besides, in order to have a good economy development, there are many factories around Beijing, the exhaust of the factories become another part of reason of the air pollution. The most import, our country is a developing one, and do not have enough ability to solve the pollution well while focusing on developing, just like UK was called The City of Fog before.
Now, Beijing has taken a lot of actions to deal with the hazy weather. Firstly, setting up the Bicycle exclusive channel, people are
encouraged to ride but not to drive, in this way, the exhaust of cars is decline. Secondly, many factories are forced to move to Hebei Provence, thus, they can continue to make a contribution to Beijing’s economy development and the air pollution is controlled. Finally, the buses and subway have a lower price than other cities, so that people prefer to go on work by bus or subway. And the limit line caused by tail number is effect, too.
I persist that the air pollution of Beijing can be controlled someday later.
篇1 老龄化原因英语
老龄化现象The Aging Phenomenon
The Family Plan has been adopted for several years, most of the young generation are only child because their parents follow the government’s policy. Over more than 30years, most family are made up of grandparents, parents and a child. Here comes the problem, the society is facing an aging situation, more and more people are getting old while the young people are less. For a typical family, four grow-ups are at the age of over 40 with a young kid less than 20years old. The aging society is getting more and more obvious, such phenomenon has been catch mass media’s attention. The policy of one child has been doubted, it has been strongly advised that a family is allowed to raise two kids. I totally agree with that, it not only bring happiness to family, but also relieve the pressure of aging problem.
计划生育已经执行了很多年了，年轻一代大都是独生子，因为他们的父母执行国家的计策。30多年过去了，很多家庭是由祖父母，父母和一个孩子组成。问题也出现了，社会面临着老龄化处境，很多人变老，然而年轻人却少。对与一个典型的家庭来说，四个成年人已过四十和一个不到20岁的孩子。老龄化社会越来越突出，这样的现象引起了大众媒体的注意。一个孩子的政策遭到了质疑，强烈一个家庭应该允许有2个孩子。我完全同意，这不仅给家庭带来欢乐，而且减轻了老龄化问题的压力。
篇2 老龄化原因英语作文(191字)
Many countries will experience aging populations in the next century because of declining birth and mortality rates. China will soon join their ranks.
As for the issue of aging, its situation has been growing increasingly severe in spite of the fact most people are still ignorant of the problems it brings about. Firstly, with families becoming smaller and living pace escalating, it is even graver for families to care for aged members adequately. Secondly, aging causes a relative decline in working force in that fewer people have to support the increasing aged people. Consequently, the productivity of the whole society is affected to some extent. Thirdly and most importantly, the aging of population in China resulted from the successful implementation of family planning has not been synchronized with national economic progress.
The rapidity of the population's aging has made it more urgent for the adoption of countermeasures. No doubt they key is to build a solid economic foundation. Meanwhile, importance shall be attached to overall social progress by changing the backward situation in social security, welfare and service. What's more, family care and community services shall also be encouraged.
带翻译：
篇3 人口老龄化原因英语作文(350字)
China has already begun to face an aging population. It is reported that by 2003 in China, the population over 65 years of age the proportion of the total population will reach 7%, which will allow China into the United Nations in 1956 set the population aging countries in the world. By 2020, this proportion will be increased to 10.85%, while in 2050, it will reach 20.43%.
At present, the time being will not become the world's largest country in the elderly population. However, it is the process of aging faster than any other developing country. In fact, China will become the world's population, one of the fastest aging process, this change brought to China unfavorable factors, it needs China to take a unique way to take care of the aging population.
Respect for the elderly project
In recent years, China's economy developed rapidly, with the strength becomes stronger, the state since 1990, security expenses for the elderly are more than 100 billion yuan every year, but also the state was increasing year after year, while also encouraging social and personal fund-raising, donations of non-juvenile welfare facilities set up to address a number of elderly people a sense of security, old age care issues. However, for a big country like China, but also there are other ways to those who need help to provide assistance for lonely elderly people. Care in the community, a warmth of respect for the elderly project in China, the rise of many young people took part in respecting the obligation to engineering work, they not only raised in all directions to bring the material assistance to the elderly, but also for their daily needs and get a wide range of help, thus bringing the warmth and love dedicated to the lonely and helpless old man.
This shows that the "senior citizen project," is China's aging population on the eve of a large number of old age to solve the problem of looking into a way to have multiple meanings, which not only brought the Gospel to the lonely elderly, but also carry forward the socialist spiritual civilization.
带翻译：
这表明“老年人项目，“是中国老龄化的前夕，大量的老来解决这个问题的调查方法有多个含义，这不仅给孤独的老人带来了福音，同时也弘扬社会主义精神文明。
