plunge something into something

Từ điển Oxford Advanced Learner 8th

▪ I. ˌplunge sb/sth ˈinto sth derived
to make sb/sth experience sth unpleasant
•The news plunged them into deep depression.
•There was a flash of lightning and the house was plunged into darkness.
Main entry: ↑plunge_derived
 
▪ II. ˌplunge sth ˈin | ˌplunge sth ˈinto sth derived
to push sth quickly and with force into sth else
•Bring the water to the boil and plunge the vegetables in.
•She plunged the knife deep into his chest.
Main entry: ↑plunge_derived