开脱的英文：
exculpate

Exculpate a person from a charge
开脱对某人的指责

Purge a person of a charge
开脱某人的罪名

He covered himself in(with)an alibi
他以不在犯罪现场作开脱，保护自己。

To clear(a person)of a charge or an imputation.Often used with respect to contempt of court.
开脱使(某人)开脱罪责或怪罪。常用于对法庭蔑视的尊敬

Fine feathers and scarlet cloaks would not be excuses for baseness and deception
漂亮的帽缨，鲜红的军服也就不能成为开脱卑鄙行径和欺骗手段的工具了。

None of this excuses his egregious, almost maniacal, tactics and his total insensitiveness to our necessities
这些都不能开脱他那种极端的，近乎疯狂的策略，以及他对我们的需要全不照顾的态度。

Fine feathers and scarlet cloaks would not be excuses for baseness and deception.
漂亮的帽缨，鲜红的军服也就不能成为开脱卑鄙行径和欺骗手段的工具了。

I write the exact truth. It would avail me nothing to extenuate it now
我所写的都是事实，我现在想为自己开脱，也丝毫无济于事。