The gas would have the dual effect of choking air-breathing animals and preventing sunlight from reaching Earth's surface.
这些有毒气体不仅会使动物造成了窒息，而且对照射到地球表面的阳光产生了严重阻挡。
The gas would have the dual effect of choking air-breathing animals and preventing sunlight from reaching Earth's surface.
这些有毒气体不仅会使动物造成了窒息，而且对照射到地球表面的阳光产生了严重阻挡。
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