防毒面具能使你免遭毒气袭击。
这些飞行机器人也可用于空气嗅探或取样，以检测空气质量，寻找污染，在生物或毒气袭击前发出预警。
These flying robots could be fitted with air sniffing or sampling technology to test air quality, search for pollution or give early warning about biological or gas attacks.
它们首先袭击两个孩子，缠在他们身上，对著他们的面孔喷毒气。
They first attacked the children, winding round their bodies and breathing their pestilential breath in their faces.
它们首先袭击两个孩子，缠在他们身上，对著他们的面孔喷毒气。
They first attacked the children, winding round their bodies and breathing their pestilential breath in their faces.
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