touch a nerve
觸動神經,引起敏感或情緒化反應
口語·形容觸及敏感點
英文釋義
to mention a sensitive or controversial topic that elicits a strong emotional reaction
例句
When I mentioned his ex-girlfriend, I really touched a nerve—he got upset.
典故來源
源自醫學上觸碰神經引發疼痛的比喻,引申為提及敏感話題引起強烈情緒。