近年来,污染问题日益严重
In recent years, the pollution problem has become increasingly serious
以上为机器翻译结果，长、整句建议使用 人工翻译 。
近年来环境污染日益严重，成为举世瞩目的全球性问题。
In recent years, environment pollution was getting worse and worse, it was a well-known global problem.
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