减刑的英文：
reduce penalty
shortened or commuted (judicial) sentence

参考例句：

Defence counsel make a speech in mitigation.
为获减刑被告律师作了发言。

Shortening of a prison sentence (because of good behaviour ).
（囚犯因表现良好而获得的）刑期减免,减刑。

Commutation is distinct from reprieve.
减刑不同于缓刑。

A duplicate of the ruling on commutation of a sentence shall be sent to the people's procuratorate.
减刑裁定的副本应当抄送人民检察院。

I do not plead any extenuating act
我不求宽大，也不要求减刑。

The sentence shall be reduced if any of the following meritorious services are performed
有下列重大立功表现之一的，应当减刑

They still can't request a commutation of their sentences, or own a firearm.
他们仍然不能要求减刑，也不能拥有枪支。

The young man did his porridge peacefully, earned his remission and came out.
那个年轻人安分地服刑，后来获减刑出狱。

The young man did his porridge peacefully,earned his remission and came out.
那个年轻人安分地服刑，后来获减刑出狱。

In mitigation,counsel submit evidence of his client's work for charity.
为获减刑，律师提出了他的委托人为慈善机构所做工作的证据。

reduce是什么意思：
v. 缩减，减小；简化；将…还原；节食；降职

be reduced to (a) pulp
变成浆状,成纸浆 [软块]

They held a sale to reduce their inventory.
他们降价出售库存货物。

To reduce in rank;demote.
使降职，使…降级

penalty是什么意思：
n. 处罚；刑罚；罚款；罚球

The extreme penalty of the law in some countries is the death penalty.
在某些国家，极刑就是死刑。

There are tough penalties for drinking and driving.
酒后开车处罚很重。

The referee gave a penalty.
裁判处以罚球。

shortened是什么意思：
v. 缩短，减少

shorten a ladder
缩合梯子

hydrogenated shortening
氢化酥油

The days are beginning to shorten.
白天开始变短了。