per·pet·u·al /pɝˈpɛʧəwəl, ʧəl; ˈpɛʧwəl/
 (a.)永久的,不斷的,沒完沒了的,四季開花的


 Per·pet·u·al a.  Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous.
    Unto the kingdom of perpetual night.   --Shak.
    Perpetual feast of nectared sweets.   --Milton.
 Circle of perpetual apparition, or Circle of perpetual occultation. See under Circle.
 Perpetual calendar, a calendar so devised that it may be adjusted for any month or year.
 Perpetual curacy Ch. of Eng., a curacy in which all the tithes are appropriated, and no vicarage is endowed. --Blackstone.
 Perpetual motion. See under Motion.
 Perpetual screw. See Endless screw, under Screw.
 Syn: -- Continual; unceasing; endless; everlasting; incessant; constant; eternal. See Constant.

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 perpetual
      adj 1: continuing forever or indefinitely; "the ageless themes of
             love and revenge"; "eternal truths"; "life
             everlasting"; "hell's perpetual fires"; "the unending
             bliss of heaven" [syn: ageless, eternal, everlasting,
              unending, unceasing]
      2: uninterrupted in time and indefinitely long continuing; "the
         ceaseless thunder of surf"; "in constant pain"; "night and
         day we live with the incessant noise of the city"; "the
         never-ending search for happiness"; "the perpetual
         struggle to maintain standards in a democracy"; "man's
         unceasing warfare with drought and isolation";
         "unremitting demands of hunger" [syn: ceaseless, constant,
          incessant, never-ending, unceasing, unremitting]
      3: occurring so frequently as to seem ceaseless or
         uninterrupted; "a child's incessant questions"; "your
         perpetual (or continual) complaints" [syn: incessant, endless]