This acid air has been known to denude forests, and obviously the inhalation of such air cannot be good for human lungs.
这种酸性气体，我们都知道毁坏森林。显然，吸入这样的空气对人的肺不利。
This acid air has been known to denude forests, and obviously the inhalation of such air cannot be good for human lungs.
这种酸性气体，我们都知道毁坏森林。显然，吸入这样的空气对人的肺不利。
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