watch·ful /ˈwɑʧfəl, ˈwɔʧ-/
 (a.)注意的,警戒的,警醒的


 Watch·ful a. Full of watch; vigilant; attentive; careful to observe closely; observant; cautious; -- with of before the thing to be regulated or guarded; as, to be watchful of one's behavior; and with against before the thing to be avoided; as, to be watchful against the growth of vicious habits.  “Many a watchful night.” --Shak. “Happy watchful shepherds.” --Milton.
    'Twixt prayer and watchful love his heart dividing.   --Keble.
 Syn: -- Vigilant; attentive; cautious; observant; circumspect; wakeful; heedful.
 -- Watch*ful*ly, adv. -- Watch*ful*ness, n.

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 watchful
      adj 1: carefully observant or attentive; on the lookout for
             possible danger; "a policy of open-eyed awareness";
             "the vigilant eye of the town watch"; "there was a
             watchful dignity in the room"; "a watchful parent with
             a toddler in tow" [syn: argus-eyed, open-eyed, vigilant,
              wakeful]
      2: experiencing or accompanied by sleeplessness; "insomniac old
         people"; "insomniac nights"; "lay sleepless all night";
         "twenty watchful, weary, tedious nights"- Shakespeare
         [syn: insomniac, sleepless]