es·cha·tol·o·gy /ˌɛskəˈtɑləʤi/
  末世學,來世論
  Es·cha·tol·o·gy n.  The doctrine of the last or final things, as death, judgment, and the events therewith connected.
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  eschatology
       n : the branch of theology that is concerned with such final
           things as death and judgment; heaven and hell; the end of
           the world