1、The judge questioned the pertinence of the witness's testimony to the case.
法官质疑证人的证词与案件的相关性。

2、His comments were always of great pertinence to the topic being discussed.
他的评论总是与讨论的话题密切相关。

3、She demonstrated the pertinence of her research findings to real-world applications.
她证明了她的研究结果与实际应用的相关性。