water pollution,名词解释 水污染

http://baike.baidu.com/view/3313.htm 这里很全 中文名称：水污染英文名称：water pollution定义1：污染物进入河流、湖泊、海洋或地下水中，使水质和底泥的物理、化学性质或生物群落组成发生变化，降低了水体的使用价值和功能的现象。应用学科：地理学（一级学科）；环境地理学（二级学科）定义2：水体因某种物质的介入，而导致其化学、物理、生物或者放射性等方面特征的改变，从而影响水的有效利用，危害人体健康或者破坏生态环境，造成水质恶化的现象。应用学科：电力（一级学科）；环境保护（二级学科）定义3：进入水中的污染物超过了水体自净能力而导致天然水的物理、化学性质发生变化，使水质下降，并影响到水的用途以及水生生物生长的现象。包括水污染和水体污染两层含义。应用学科：生态学（一级学科）；污染生态学（二级学科）定义4：因人为因素或自然过程直接或间接将物质排入水体中，引起水体发生影响水生生物正常繁殖生长的水质变化。应用学科： 水产学（一级学科）；渔业环境保护（二级学科）定义5：污染物进入水体，使水质恶化，降低水的功能及其使用价值的现象。应用学科： 水利科技（一级学科）；环境水利（二级学科）；水污染防治（水利）（三级学科）

Do Something to Fight against Pollution
Pollution is becoming more and more serious. I.ook at the batteries all around us. We all know that used batteries are bad for environment. We shouldn't throw them away. We should recycle them. Look at the plastic bags all around us. We all know plastic bags never rot. When we do shopping, we can use paper bags to store goods instead of plastic bags.
As a matter of fact, we can do a lot to prevent the pollution.Let's do something to bring pollution under control.

The Importance of Water
As we all know, plants and animals need water. So do the people's life and production, t,ife couldn't go on without water.
With the rapid development of agriculture and industry, more and more water is needed. Therefore, water is becoming scarce in many places. What's more, a lot of rivers and lakes are beginning polluted by the waste watcr from factories. Fish can't live in them any longer. At the same time, thc waste water does great harm to people's health.
In order to make rivers and lakes clean and prevent water from being polluted,we must do something to stop all sorts of pollution.

水的重要性
正如我们所了解的，动植物需要水，人类的生产生活也需要水。没有水便没有生命。
随着工农业的迅速发展，水的需要量越来越大。因此，许多地方缺水。而且，许多河流湖泊被工厂排放的污水所污染，鱼不能生存。同时，废水给人们的健康带来极大的危害。
为了保持河流湖泊清洁，防止水污染，我们必须采取措施，阻止各种污染。

你上初中吧.. 下面是我写的 仅供参考 不过我一般英语作文30分得27左右比较多 嘿~
How to protect water
As everybody knows that water is one of the most important things for us all to live in the earth.We can not live without water.So it's important to protect water.
Time gose by,With the rapid development of science and technology,we are faced with serious environmental problems.Water pollution is very serious.Drinking water has been reduced.So we must take measures to protect water resources.But how should we protect and re-use water resources?
On one hand,we can re-use water.In order to make full use of water,We can plant flowers using the water were be used to wash dishes,and so on.On the other hand,we should not waste water in our daily lives.Remember to turn off the tap when you don't use it.
We can do so much to reduse water problems.

Water Pollution

Spring is tht best season of the year. The weather gets warmer and warmer. My clas i'amates and I took a one-day sightseeing around our city.The scene was pretty. But when we saw the rivers along our city, I felt very sorry, and thoughit a lot.
With the development of modern agriculture and industry, more and more waste water is being poured into rivers. It has caused serious pollution. The river is becoming so dirty that no living things can live in it. The river is giving off a terrible smell.
We make an urgent appeal that measures should be taken to cope with the situation. Our government should start building various facilities such as sewage treatment!plant and encourage scientists to work out more and better ways to reduce the pollution of water.
Water is tho source of our lives. It is very important to protect water.

How to protect water As everybody knows that water is one of the most important things for us all to live in the earth.We can not live without water.So it's important to protect water. Time gose by,With the rapid development of science and technology,we are faced with serious environmental problems.Water pollution is very serious.Drinking water has been reduced.So we must take measures to protect water resources.But how should we protect and re-use water resources? On one hand,we can re-use water.In order to make full use of water,We can plant flowers using the water were be used to wash dishes,and so on.On the other hand,we should not waste water in our daily lives.Remember to turn off the tap when you don't use it. We can do so much to reduse water problems.

in
recent
years,protecting
the
environment
is
becoming
more
and
more
important
to
the
whole
human
beings.(近年来,环保越来越受到全人类的重视)
it
is
everyone's
duty
to
do
someting
good
to
the
environment
around
us.（保护好我们周边的环境是我们每一个人的职责）as
middle
school
students,we
can
also
do
a
lot
of
helpful
things.（作为中学生的我们,也可以做许多有利于环保的事）for
example,we
can
protect
it
by
not
throwing
rubbish
away.（比如说,我们可以避免到处扔垃圾）we
can
save
water
to
make
full
use
of
it.（我们可以节约用水,并且充分利用水资源）we
can
use
materials
which
do
no
harm
to
the
enviornment.（我们还可以使用不破坏环境的材料）thingd
we
can
do
are
a
great
many.（我们可以做的事很多）only
when
we
have
the
idea
of
loving
our
environment
can
we
make
a
better
place
to
live.（只有我们有了环保的观念我们才能创建一个更好的生活环境）so
everybody,let's
take
action!（所以,大家行动起来吧!）自己打的哟,能不能给点分啊?