put in your two cents' worth

Từ điển Oxford Advanced Learner 8th

put in your two ˈcents' worth idiom
(NAmE) (BrE put in your two ˈpennyworth, put in your two ˈpenn'orth) (informal)to give your opinion about sth, even if other people do not want to hear it
Main entry: ↑cent_idiom