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It is recognized that environment pollution has become one of the most serious problems.
人们一致认为环境污染已经成了最严重的问题之一。
youdao
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Mercury pollution is one of the serious environment issues in the world.
汞污染已成为全球性环境问题。
youdao
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Mercury pollution is one of the serious environment issues in the world.
汞污染已成为全球性环境问题。
youdao