crack down片語動詞KK [kræk daʊn] /kɹæk daʊn/發音片語動詞1嚴厲打擊、取締、嚴加整治常與 on 連用Police are cracking down on drunk driving this holiday season.警方在這個假期期間嚴厲打擊酒後駕車。2加強管束、嚴加管理常與 on 連用The school is cracking down on students who skip class.學校開始嚴加管束那些逃課的學生。