plunge sth ↔ in also plunge sth into sth to push something firmly and deeply into something else把某物投（插，刺）入某物中:•He opened the bag and plunged his hand in.他打开包把手伸了进去。•Plunge the pasta into boiling water.把意大利面倒入沸水中。•Repeatedly she plunged the knife into his chest.她一刀刀插入他的胸口。plunge (sb / sth) into sthphr v |