名詞 commutation:

1. the travel of a commuter
   同義詞：commuting
2. a warrant substituting a lesser punishment for a greater one
3. (law) the reduction in severity of a punishment imposed by law
   同義詞：re-sentencing
4. the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"
   同義詞：substitution, exchange

1. He appealed for (a) commutation of the death sentence to life imprisonment.
   他已上訴請求將死刑減為無期徒刑。

com.mu.ta.tion

n.（名詞）
A substitution, an exchange, or an interchange.
交換：代替、交換或互換

The substitution of one kind of payment for another.
代償：用一類支付代替另一類
The payment substituted.
代替的支付
The travel of a commuter.
通勤
Electricity
【電學】
Conversion of alternating to unidirectional current.
整流：交流電轉(zhuǎn)變到單向電流
Reversal of current direction.
顛倒電流方向
Law Reduction of a penalty to a less severe one.
【法律】 減刑：減刑到較輕的程度

來源：
Middle English commutacioun
中古英語 commutacioun
from Latin commôt3tiô commôt3tiôn-
源自 拉丁語 commôt3tiô commôt3tiôn-
from commôt3tus [past participle of] commôt3re [to alter, exchange] * see commute
源自 commôt3tus [] commôt3re的過去分詞 [轉(zhuǎn)變，變換] *參見 commute