英语词汇“perpetual motion”是什么意思，“perpetual motion”的读音、用法及例句翻译-烛光网

词汇	perpetual motion
释义	perpetual motionn.（名词） The hypothetical continuous operation of an isolated mechanical device or other closed system without a sustaining energy source.永恒运动：一种奇特的机械设备或其它封闭系统，无需提供能量而永恒不断地运转
随便看	spanning spanokopita spans call slip call to quarters call-up callus callused calluses callusing call waiting call–and–response call–in call–up calm calm calm calmative calmed calmer calmest calming calmodulin calmodulins calms

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