今天许多污染了的河流变得越来越干净。
Today, many polluted rivers are getting cleaner and cleaner.
今天，许多污染了的河流变得越来越清澈。
Today, many polluted rivers are getting clearer and clearer.
一个是许多污染物扩散的广度和速度是惊人的。
One is that the transport of many pollutants has been surprisingly wide and rapid.
它们造成许多环境污染。
许多国家正在制定规则来对抗污染。
许多人对空气中花粉之类的污染物质过敏。
Many people are allergic to airborne pollutants such as pollen.
在这个世界上，有许多不同类型的污染。
没有水我们不能生存，但是现在许多河流被污染。
We can't live without water, but now many rivers are polluted.
有许多资料表明我们呼吸的空气已受到污染。
There is much information to show that the air we breathe is polluted.
没有水我们不能生存，可是此时许多河流被污染。
We can't live without water but now many rivers are polluted.
因为污染严重，许多美丽的鱼类正在面临绝种。
Many beautiful fish are fast disappearing because of the severe pollution.
在大城市里，在寒冷的冬季，许多老年人因呼吸污染的空气而死去。
In big cities during cold winter months, many old people die from the polluted air.
现今有许多新的，更强的化学物质，空气和水源的污染，辐射和核电厂等。
There are many new and stronger chemicals, air and water pollution, radiation and nuclear power.
许多国家已经通过了法律来防止未来环境污染。
Many countries have passed laws to prevent the environment from being future polluted.
污染已经成为一个严重的问题在许多城市。
许多的河流干枯了，没干枯的也被污染了。
Many of its rivers have dried up, the rest are heavily polluted.
许多国家在下大力气减少污染。
Many countries are making a strong effort to reduce pollution.
土地和水污染每年杀死许多动物。
化工厂的许多有毒废料污染这条河。
A lot of poisonous waste from the chemical works polluted the river.
许多河流被工业废水污染了。
我们应该采取许多措施去停止污染。
没有水我们不能生存，但是现在许多河流被污染。
We cant live without water, but now many rivers are polluted.
中国的许多大城市空气严重污染。
A lot of big cities in China are now plagued by serious air pollution.
我们没有水是无法生存的但此时许多河流被污染。
We can't live without water but now many rivers are polluted.
许多人生病了，因为他们喝了污染的水。
虽然进步带给我们许多省时的机器，但也为我们带来污染。
While progress has brought us many time-saving machines, it has also brought us pollution.
许多河流和湖泊受到严重污染。
当然，许多有钱人仍然会继续留在雾霾笼罩的北京和中国其他受到污染的城市。
Of course, many rich will stay in smoggy Beijing and China's other polluted cities.
这将会引起许多有关环境污染方面的问题。
It's going to raise a lot of problems with respect to atmosphere pollution.
这将会引起许多有关环境污染方面的问题。
It's going to raise a lot of problems with respect to atmosphere pollution.
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