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law 法律 the act of making a punishment less severe 减刑 a commutation of the death sentence to life imprisonment 由死刑减为终身监禁
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finance 金融 the act of replacing one method of payment with another; a payment that is replaced with another 代偿；折合偿付；代偿金
Word Originlate Middle English (in the sense ‘exchange, barter’, later ‘alteration’): from Latin commutatio(n-), from commutare ‘exchange, interchange’ from com- ‘altogether’ + mutare ‘to change’. Sense (1) dates from the late 16th cent.