She did not understand the relevance of his remarks.

她不解他议论与话题有何相干。

Her ideas have lost all relevance to the modern world.

她想法与现代社会完全脱节。

I can’t see the relevance of his comment to the debate.

我不明白他评论与这一争论有何系。

He claims that the laws are antiquated and have no contemporary relevance.

他声称这些法规过于陈旧，已没有任何现实意义。