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	prescinds Prescott Prescott College prescreen prescribe prescribe prescribed prescribes prescribing prescript prescriptible prescription prescription prescriptions prescriptive prescriptive grammar prescriptivism prescriptivist prescriptivists prescripts preseason preseasonal preselect presell presence

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