is this too serious? can you make it oral? I think the air pollution in Dongying city is a significant environmental threat. You know, smoke from factories and cars releases sulphur dioxide into the a

Sarah

is this too serious? can you make it oral? I think the air pollution in Dongying city is a significant environmental threat. You know, smoke from factories and cars releases sulphur dioxide into the air making it toxic.

2015年7月7日 00:38

回答 · 3

Well, air pollution is a serious problem anyways, but what is your questions specifically?

2015年7月7日

还未找到你的答案吗？

把你的问题写下来，让母语人士来帮助你！

Sarah

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