美，口上床睡觉

1. 睡觉：sack in 睡觉 | sack out 睡觉 | sack race 套袋跑

2. 跑完长跑你最想做的是什么：你的英文名字是什么:DAVID LIU | 跑完长跑你最想做的是什么:sack out | 你挣到的第一个月的工资要怎么花:voluntariness

verb

1. prepare for sleep

e.g. I usually turn in at midnight
He goes to bed at the crack of dawn

Synonym: go to bedturn inbedcrawl inkip downhit the hayhit the sackgo to sleepretire