pre·vail /prɪˈve(ə)l/
  (v.)壓倒,占上風,占優勢;說服,勸說
  Pre·vail v. i. [imp. & p. p. Prevailed p. pr. & vb. n. Prevailing.]
  1. To overcome; to gain the victory or superiority; to gain the advantage; to have the upper hand, or the mastery; to succeed; -- sometimes with over or against.
     When Moses held up his hand, Israel prevailed, and when he let down his hand, Amalek prevailed.   --Ex. xvii. 11.
     So David prevailed over the Philistine.   --1 Sam. xvii. 50.
     This kingdom could never prevail against the united power of England.   --Swift.
  2. To be in force; to have effect, power, or influence; to be predominant; to have currency or prevalence; to obtain; as, the practice prevails this day.
     This custom makes the short-sighted bigots, and the warier skeptics, as far as it prevails.   --Locke.
  3. To persuade or induce; -- with on, upon, or with; as, I prevailedon him to wait.
     He was prevailed with to restrain the Earl.   --Clarendon.
     Prevail upon some judicious friend to be your constant hearer, and allow him the utmost freedom.   --Swift.
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  prevail
       v 1: be larger in number, quantity, power, status or importance;
            "Money reigns supreme here"; "Hispanics predominate in
            this neighborhood" [syn: predominate, dominate, rule,
             reign]
       2: be valid, applicable, or true; "This theory still holds"
          [syn: hold, obtain]
       3: continue to exist; "These stories die hard"; "The legend of
          Elvis endures" [syn: persist, die hard, run, endure]
       4: prove superior; "The champion prevailed, though it was a
          hard fight" [syn: triumph]
       5: use persuasion successfully; "He prevailed upon her to visit
          his parents"