You touched a raw nerve when you mentioned his first wife.

你谈起他的第一个妻子，这就触到了他的痛处。

《牛津词典》

The whole subject touches a raw nerve.

这个话题触动了她的神经。

youdao

My remarks about divorce had unwittingly touched a raw nerve.

我关于离婚的言论无意间触到了别人的痛处。

youdao

My remarks about divorce had unwittingly touched a raw nerve.

我关于离婚的言论无意间触到了别人的痛处。

youdao