| 单词 | perpetual motion of the second kind | 
| 释义 | perpetual motion of the second kind in British English (pəˈpɛtʃʊəl ˈməʊʃən əv ðə ˈsɛkənd kaɪnd) noun motion of a hypothetical mechanism that derives its energy from a source at a lower temperature. It is impossible in practice because of the second law of thermodynamicsanother term for perpetual motion (sense 2) | 
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