hammer home
phrasal verbhammer something home
to emphasize a point, an idea, etc. so that people fully understand it 反复讲透，重点讲清（要点、想法等） The school tries to hammer home the importance of homework. 学校试图强调家庭作业的重要性。
to kick a ball hard and score a goal 用力踢球得分；把球猛踢进球门 Robben crossed the ball and Babel hammered it home. 罗本传中，巴贝尔将球击回。