The major problem today is how to control the environment pollution.
当今最主要的问题是如何控制环境污染。
Steven: I think the biggest environment problem in my country is air pollution.
史蒂文：我觉得我们国家最大的环境问题是空气污染。
The pollution of the environment is now a big problem.
现在环境污染是一个大问题。
B. I think it's the problem of environment pollution.
我认为这是问题的环境污染。
Noise pollution now is a serious environment problem.
现在噪音污染是个严重的环境问题。
Air pollution is the most serious environment problem.
这其中大气污染是一个较为突出的问题。
Air pollution is the most serious environment problem.
这其中大气污染是一个较为突出的问题。
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