These compounds are the main cause of acid rain.
这些混合物是酸雨的主要成因。
There's been a lot of debate about the cause of acid rain.
关于酸雨形成的原因已经讨论了很多了。
There's been a lot of debate about the cause of acid rain .
关于酸雨形成的原因已经讨论了很多了。
Industrial emissions have been blamed as the major cause of acid rain.
人们认为工业废气是产生酸雨的主要原因。
Industrial emissions have been blamed as the major cause of acid rain.
人们认为工业废气是产生酸雨的主要原因。
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