pre·cau·tion /prɪˈkɔʃən/
 U謹慎,警惕;U預防;C預防方法,預防措施


 Pre·cau·tion n.
 1. Previous caution or care; caution previously employed to prevent mischief or secure good; as, his life was saved by precaution.
    They [ancient philosophers] treasured up their supposed discoveries with miserable precaution.   --J. H. Newman.
 2. A measure taken beforehand to ward off evil or secure good or success; a precautionary act; as, to take precautions against accident.


 Pre·cau·tion, v. t.
 1. To warn or caution beforehand.
 2. To take precaution against. [R.]

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 precaution
      n 1: a precautionary measure warding off impending danger or
           damage or injury etc.; "he put an ice pack on the injury
           as a precaution"; "an insurance policy is a good
           safeguard"; "we let our guard down" [syn: safeguard, guard]
      2: the trait of practicing caution in advance
      3: judiciousness in avoiding harm or danger; "he exercised
         caution in opening the door"; "he handled the vase with
         care" [syn: caution, care, forethought]