No amount of rationalization could justify his actions.
无论怎么解释，他的行为都不能说是正当的。
A long list of reasons was trundled out to justify their demands.
他们重复了一大串理由来说明他们的要求正当。
No argument can justify a war.
没有任何理由能证明一个战争有理。
You don't need to justify yourself to me.
你不必向我解释你的`理由。
It rests with management to justify their actions.
管理部门应当为他们的行动说出个道理来。