His death sentence was commuted to life imprisonment...是什么意思？

His death sentence was commuted to life imprisonment...

他的死刑被减为无期徒刑。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

death

n. 死亡，（某种）死法，死亡方式，病危，死神；

例句
The following year Parliament voted to abolish the death penalty for murder...
议会于翌年表决对谋杀罪废除死刑。

sentence

n. 句子，宣判；vt. 宣判，判决；

例句
Heath's appeal against the sentence was later successful...
希思对判决不服提出上诉，后来胜诉了。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

commuted

v. 通勤( commute的过去式和过去分词 )，减（刑），代偿；

例句
His death sentence was commuted to life imprisonment...
他的死刑被减为无期徒刑。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

life

n. 生活，生计，生命，性命，一生，寿命，人生，尘世；

例句
In his later life he became even more absent-minded.
他晚年变得愈加健忘了。

imprisonment

n. 关押，监禁，“imprison”的派生；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。