hammer something home

Từ điển Oxford Advanced Learner 8th

ˌhammer sthˈhome derived
1. to emphasize a point, an idea, etc. so that people fully understand it
•The school tries to hammer home the importance of homework.
2. to kick a ball hard and score a goal
•Robben crossed the ball and Babel hammered it home.
Main entry: ↑hammer_derived