hit a raw nerve

US /hɪt ə rɔ nɜrv/
UK /hɪt ə rɔ nɜrv/
"hit a raw nerve" picture
1.

触及痛处, 触动敏感神经

to upset someone by referring to a sensitive topic

:
His comment about her failed business really hit a raw nerve.
他对她失败的生意的评论真的触及了痛处
Be careful what you say; you might hit a raw nerve with him about his divorce.
说话要小心;你可能会触及他离婚的痛处