| 单词 | commutation |
| 释义 | Word Frequency commutation(ˌkɒmjʊˈteɪʃən) noun 1. a substitution or exchange 2. a. the replacement of one method of payment by another b. the payment substituted 3. the reduction in severity of a penalty imposed by law 4. the process of commutating an electric current 5. US the travelling done by a commuter |
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