keep a slack hand 放松缰绳,懈怠...slack n.松弛,松懈,淡季,闲散,家...slack-jawed a.发呆的,目瞪口呆的...automatic slack adjuster 自动松紧调整器...slack adjuster 松紧调整器...Hatch-Slack pathway 哈斯二氏途径...coal slack 煤屑...slack side 松边...slack time 萧条期...slack up 减弱,放松...slack coal 碎煤...slack variable 松驰变量松弛变量...slack season 淡季...slack control 软弱无力的控制...slack tide 平潮...period of slack sales 销售淡季...slack off 松懈,偷懒偷工,怠工...organizational slack 组织松弛...
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