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单词
perpetual motion
释义
perpetual motion
n.
(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
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cresting
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更新时间:2026/4/8 10:10:27