con·tam·i·nate /kənˈtæməˌnet/
  (vt.)弄污,弄髒,染汙,傳染,毒害
  con·tam·i·nate /kənˈtæməˌnet/ 及物動詞
  汙染,損害
  Con·tam·i·nate v. t. [imp. & p. p. Contaminated p. pr. & vb. n. Contaminating ]  To soil, stain, or corrupt by contact; to tarnish; to sully; to taint; to pollute; to defile.
  Shall we now
  Contaminate our figures with base bribes?   --Shak.
     I would neither have simplicity imposed upon, nor virtue contaminated.   --Goldsmith.
  Syn: -- To pollute; defile; sully; taint; tarnish; soil; stain; corrupt.
  Con·tam·i·nate a. Contaminated; defiled; polluted; tainted. “Contaminate drink.”
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  contaminate
       v 1: make impure; "The industrial wastes polluted the lake" [syn:
             pollute, foul]
       2: make radioactive by adding radioactive material; "Don't
          drink the water--it's contaminated" [ant: decontaminate]