Hypernyms:motion
Inherited Hypernyms:perpetual motionmotionstateattributeabstractionentity
| 单词 | perpetual motion |
| 释义 | Perpetual Motion nnoun.statemotion that continues indefinitely without any external source of energy; impossible in practice because of friction Hypernyms:motion Inherited Hypernyms:perpetual motionmotionstateattributeabstractionentity |
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