Mercury pollution from power plants is a national problem that requires a national response.
发电厂造成的汞污染是一个全国性的问题，需要全国作出反应。
-- Tom Allen 汤姆·艾伦
Mercury pollution from power plants is a national problem that requires a national response.
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Mercury pollution from power plants is a national problem that requires a national response.
发电厂造成的汞污染是一个全国性的问题，需要全国作出反应。
-- Tom Allen 汤姆·艾伦
