zhè zhǒng / méng yào / wén qǐ lái / méi yǒu / qì wèi / què / néng / ràng rén / xùn sù / hūn shuì

这种蒙药闻起来没有气味，却能让人迅速昏睡。

This knockout drug has no smell, yet it can make a person fall asleep quickly.