tau·tol·o·gy /tɔˈtɑləʤi/
 同義反復,重複


 tautology
 重言


 tautology
 同義反複


 Tau·tol·o·gy n.  Rhet. A repetition of the same meaning in different words; needless repetition of an idea in different words or phrases; a representation of anything as the cause, condition, or consequence of itself, as in the following lines: --
 The dawn is overcast, the morning lowers,
 And heavily in clouds brings on the day.   --Addison.
 Syn: -- Repetition.
 Usage: -- Tautology, Repetition. There may be frequent repetitions (as in legal instruments) which are warranted either by necessity or convenience; but tautology is always a fault, being a sameness of expression which adds nothing to the sense or the sound.

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 tautology
      n 1: (logic) a statement that is necessarily true; "the statement
           `he is brave or he is not brave' is a tautology"
      2: useless repetition; "to say that something is `adequate
         enough' is a tautology"