open-eyed /ˌopənˈaɪd/
 (a.)留神的,驚訝的
 O·pen-eyed a. With eyes widely open; alert to possible danger; watchful; vigilant.
 Syn: -- argus-eyed, hawk-eyed, unsleeping, vigilant, wary, watchful.
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 open-eyed
      adj : 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, vigilant, wakeful,
             watchful]