sleepingadj.睡着的n.睡眠动词sleep的现在分词.
sleepv.睡觉n.睡眠;睡觉
sleep in the open露宿
sleep disturbance睡眠障碍
sleeping position就眠位置
sleeping sicknessn.[医]昏睡病
sleeping in class上课睡觉
Sleeping disorder睡眠障碍
sleeping medicine安眠药
sleep period time睡眠期时间, 睡眠周期时间
sleep through sth因睡着而没听见/看见
Sleep respiration睡眠呼吸
"sleepiness causes many driving accidents"