observing
  觀察
  Ob·serve v. t. [imp. & p. p. Observed p. pr. & vb. n. Observing.]
  1. To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility.
     Ye shall observe the feast of unleavened bread.   --Ex. xii. 17.
     He wolde no such cursedness observe.   --Chaucer.
     Must I budge? Must I observe you?   --Shak.
  With solemn purpose to observe
  Immutably his sovereign will.   --Milton.
  2. To be on the watch respecting; to pay attention to; to notice with care; to see; to perceive; to notice; to discover; as, to observe an eclipse; to observe the color or fashion of a dress; to observe the movements of an army; to observe an accident.
  3. To express as what has been noticed; to utter as a remark; to say in a casual or incidental way; to remark.
  Ob·serv·ing, a. Giving particular attention; habitually attentive to what passes; observant1; as, an observing person; an observing mind. -- Ob*serv*ing*ly, adv.
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  observing
       adj : quick to notice; showing quick and keen perception [syn: observant]