cir·cum·spect /ˈsɝkṃˌspɛkt/
  (a.)細心的,慎重的
  Cir·cum·spect a.  Attentive to all the circumstances of a case or the probable consequences of an action; cautious; prudent; wary.
  Syn: -- See Cautious.
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  circumspect
       adj : heedful of potential consequences; "circumspect actions";
             "physicians are now more circumspect about recommending
             its use"; "a discreet investor" [syn: discreet]