He went online and ordered a gas mask.
于是，他上网订购了一套防毒面具。
This gas mask can immunize you against poison gas.
防毒面具能使你免遭毒气袭击。
Always use a gas mask when risking exposure to ammonia!
当直接接触氨时候一定要带防毒面具！
Plus gas mask and new Valentine's Day bandanna for all characters.
另外防毒面具和新情人的所有字符日手帕。
They contrived a mask against poison gas.
他们设计了一种防毒面具。
Traffic could actually serve to mask the effects of the gas stations.
交通污染其实为加油站做了掩护。
Traffic could actually serve to mask the effects of the gas stations.
交通污染其实为加油站做了掩护。
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