vt.

1. 减轻（刑罚等）[（+to）]
   His sentence was commuted from death to life imprisonment.

   他由死刑改判为终身监禁。

2. 用……交换（或代替）；交换[（+for/into）]
3. 改变，使变成[（+into）]
4. 折合；折偿[（+into/for）]

vi.

1. （购用月票或季票）通勤[（+between/from/to）]
   She commutes between Chicago and Rockford every day.

   她每天通勤于芝加哥和洛克福之间。

2. 替代；代偿
   commute with payment in place of labor

   出钱代偿劳役

n.

1. 【口】通勤[C]
   It's a long commute from New York to Boston.

   从纽约通勤到波士顿路程很长。

v.

1. travel some distance between one's home and place of work on a regular basis.
2. reduce (a judicial sentence, especially a sentence of death) to a less severe one.
   ▸change one kind of payment or obligation for (another).
   ▸replace (an annuity or other series of payments) with a single payment.
3. Mathematics  (of two operations or quantities) have a commutative relation.