地球上20%的人类无法使用干净的饮用水。单空气污染一项就导致几乎三百万人口死亡。

That is 15% of all the deaths in the world. 20% of the people on earth do not have access to clean drinking water.

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这造成每年四百万人口死亡，因为吸入室内烟雾，当然，大部分的死者是妇女。

And this causes about 4 million deaths a year from indoor smoke inhalation, and of course, most of those who die are women.

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