他声称餐厅账单是合理的业务支出。

He claimed that the restaurant bill was a ___legitimate business expense.

即使当他提到暴力行为是实现目标的合理方式时，她也没有反应。

Not even when he mentioned acts of violence as a ___legitimate way of achieving one's goals did she react.

教授认为研究有争议的话题是学术自由的合理组成部分。

The professor argued that investigating controversial topics was a ___legitimate part of academic freedom.