1. His hands slacked down when he heard her shouting. 当听到她的喊声时，他的双手松垂下来。
2. They keep the workers even in slack times. 在萧条时期他们也不裁减人员。
3. I may hate customers, but at least I can slack off sometimes. 虽然我不喜欢客户，但是至少有时候还可以偷偷懒。
英英解释
n.
1. dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal
2. a noticeable deterioration in performance or quality
3. a stretch of water without current or movement
4. a soft wet area of low-lying land that sinks underfoot
5. the condition of being loose (not taut)
6. a cord or rope or cable that is hanging loosely v.
1. avoid responsibilities and work, be idle
2. be inattentive to, or neglect
3. release tension on
4. make less active or fast
5. become slow or slower
6. make less active or intense
7. become less in amount or intensity
8. cause to heat and crumble by treatment with water adj.
1. not tense or taut
2. lacking in strength or firmness or resilience
3. flowing with little speed as e.g. at the turning of the tide
4. lacking in rigor or strictness
