她为自己的错误找了一系列看似合理的解释。

She offered several ___rationalisations to justify her mistake.

工厂通过合理化改革减少了不必要的生产环节。

The factory's ___rationalization eliminated redundant production steps.

他总是用工作太忙来为自己的迟到找借口，这其实是一种心理上的合理化防御机制。

He always uses being too busy with work as ___rationalization for his lateness, which is actually a psychological defense mechanism.