twist the knife
進一步加重傷害或痛苦，尤其是在已經痛苦的情況下
口語·表達雪上加霜
英文釋義
to make a difficult situation worse; to intentionally exacerbate someone's pain or discomfort
例句
He already felt bad about failing, and she twisted the knife by laughing.
典故來源
字面意為'扭動刀子'，比喻在他人痛苦時故意加劇傷害。