knockdown的知识精选

“knockdown”可以造什么句,knockdown造句
Ifyou'veseenvideoofaknockdown,youknowitisclearlyfrighteningandstressful.HealthinsecticidecoatingtypeWS-Iwasshowntohaveverystrongknockdownandcidaleffectonmosquitoes,fliesandcockroachs.Shareenexhibitst...
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