self-sac·ri·fice /ˈsɛlfˈsækrəˌfaɪs ||fəs ||ˌfaɪz/
  自我犧牲,獻身
  Self-sac·ri·fice n. The act of sacrificing one's self, or one's interest, for others; self-devotion.
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  self-sacrifice
       n : acting with less concern for yourself than for the success
           of the joint activity [syn: selflessness]