We had doubts about the validity of their argument.

我们对他们的论点的正确性有过怀疑。

《牛津词典》

The period of validity of the agreement has expired.

本协议的有效期已过。

《牛津词典》

youdao

Prime Minister Soro has insisted, though,that confirming the validity of voter applications is integral in ensuring the success of the election.

VOA: standard.2009.09.29

What do you think of the validity of his argument though?

那你怎么看待他论点的正确性呢？

耶鲁公开课 - 公正课程节选

You don't really puzzle your head about questions of interpretation, how we determine the validity of interpretation and so on, until A) meaning becomes terribly important to you, and B) the ascertainment of meaning becomes difficult.

你一般不会在诠释，和如何确定诠释的正确与否，这样的问题上纠结，除非：1，意义对你来说很重要，2，确定意义很困难。

耶鲁公开课 - 文学理论导论课程节选

State officials, seeking to keep Williams locked up, have questioned the validity of the new results.

WSJ: Lawyer: NY man at center of HIV scare not positive

"The experimental evidence ... provides no reason to challenge the validity of the improvements".

BBC: graph of results trend

The board denied the request after determining there were questions about the validity of various contributions.

WSJ: Liu Campaign in Tough Spot on City Matching Funds