Motion that goes on for ever; a state of movement or activity that appears to be continuous and unceasing.
| 单词 | θ111240 |
| 释义 | the world > movement > [noun] > perpetual motion (2) perpetual motion1566 Motion that goes on for ever; a state of movement or activity that appears to be continuous and unceasing. perpetuum mobile1953 = perpetual motion, n. 1. |
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