crack the

问题描述:

crack the
crack vt.使发出爆裂声;使破裂,使爆裂
whip n.n.鞭子,抽打,车夫,搅拌器
原句是:a large portion of duties went undone for extended periods until Dad cracked the whip.

hey hey,it means:
because someone didn't carry out most of his duties,his dad 发彪 la!