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  1. perpetual motion

    • IPA[pərˈpeCH(əw)əl ˈmōSHən]

    美式

    • n.
      a state in which movement or action is or appears to be continuous and unceasing;the motion of a hypothetical machine which, once activated, would run forever unless subject to an external force or to wear
    • noun: perpetual motion

    • 釋義

    名詞

    • 1. a state in which movement or action is or appears to be continuous and unceasing the planet is in perpetual motion the perpetual motion of the dance floor
    • the motion of a hypothetical machine which, once activated, would run forever unless subject to an external force or to wear the age-old quest for the secret of perpetual motion a perpetual motion machine
    • 更多解釋

    英式

    • n.
      a state in which movement or action is or appears to be continuous and unceasing: the planet is in perpetual motion the perpetual motion of the dance floor

    Oxford Dictionary

  2. 知識+

    • English Grammar

      ...have supported and always will support your efforts to invent a perpetual-motion machine

    • 可以幫我翻譯這篇文章嗎? (急)明天上課要用,贈送20點

      ...用來從事不法目的的發明 @ non-operable inventions, including " perpetual motion " machines ( which are presumed to be non-operable because...

    • 請幫我翻譯這一段~~急 20點

      "只有一千八百萬的人生活在澳洲這一大片土地上",她說,"比起超過單是一個美國麻薩諸塞州就有超過六百萬人口,我們不像你在波士頓的生活那般擁擠,那是一種對空間全然不同的感覺。" 對Blackmore來說有個緊迫的問題,那就是對生活步調很快的美國做一個...