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关注:1
2013-05-23 12:21
求翻译:Environmental pollution by organic compounds and metals became extensive as mining and industrial activities increased in the 19th century and have intensified since then.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
Environmental pollution by organic compounds and metals became extensive as mining and industrial activities increased in the 19th century and have intensified since then.
问题补充: |
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