drift off

英 美
  • 渐渐入睡
  • drift vi.漂流;漂移;吹积;漂泊;偏离vt.使漂流;使堆积n.漂流;趋势;漂泊
  • off adv.表示状态的关闭或离开prep.离开;在...之外adj.空闲的;离开的;关闭的v.离开;脱下
Verb:
  1. change from a waking to a sleeping state;

    "he always falls asleep during lectures"