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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Palestinian residents described how on June 27th police charged through Silwan's narrow thoroughfares firing tear-gas grenades through Windows and doors, choking people inside their homes.

巴勒斯坦人讲述着6月27日警察是怎样冲过西尔万狭窄的道路而后对着窗户门发射催泪弹，让屋里的居民窒息而死。

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Hold the bottle; don't prop it up by itself. This can help prevent choking, extra gas, tooth decay, and provide bonding time.

握紧奶瓶，不要让它自己滴下来，这样能防止窒息，过多的气体，牙齿的腐蚀，而提供了亲子联系的时间。

youdao

They threw tear gas and pepper gas and everybody was choking and suffocating.

BBC: Friday prayers: Differing views

Choking from the tear gas fired into the crowd, some hoisted sledgehammers to smash up the pavement in order to hurl broken slabs over improvised barricades that now enclose a makeshift camp.

ECONOMIST: The police fires live rounds at protesters