slack off片语动词KK [slæk ɔf] /slæk ɔf/发音片语动词1偷懒、懈怠、混日子口语He started slacking off as soon as the manager left.经理一走,他就开始偷懒。2放松努力、松懈Don't slack off now; the exam is only two weeks away.现在别松懈,考试只剩两个星期了。3减弱、减少、转淡Sales usually slack off after the holiday season.销售在假期过后通常会转淡。用这个字练口说→