专家引述美国宇航局消息来源的话说，那座城市肯定是天国，“因为诚如我们所知，生命是不可能存在于冰冷且没有空气的太空中的。”

And the expert quoted NASA sources as saying that the city is definitely Heaven "because life as we know it couldn't possibly exist in icy, airless space."

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这则报道还引述了中国传染病病中心负责人的话说，使用空气净化器和戴口罩对抗霾更有效。

Thee same report also quoted officials from China's communicable disease centre as saying that using air purifiers and wearing masks were more effective in combating the smog.

youdao

这则报道还引述了中国传染病中心负责人的话说，使用空气净化器和戴口罩对抗霾更有效。

The same report also quoted officials from China's communicable disease centre as saying that using air purifiers and wearing masks were more effective in combating the smog.

youdao