心不在焉
English Expression:
  1. n.  absence
  2. n.  abstraction
  3. vi.  woolgather
  4. n.  woolgathering
  5. n.  nobody home
  6. n.  absence of mind
  7. n.  have a head like a sieve
  8. n.  have one's head in the clouds
  9. n.  be [go, run](a) woolgathering
  10. n.  unheeding; absent-minded; inattentive; be preoccupied with sth.else; one's mind is not on what one is doing
  11. n.  absence of `mind failure to think about what one is doing
  12. n.  absent-mindedness
  13. n.  wool-gathering
  14. n.  Absent-minded
  15.   Xinbuzaiyan
French Expression:
  1. adj.  distrait, inattentif, avoir l'esprit absent, être dans la lune