twist the knife
进一步加重伤害或痛苦，尤其是在已经痛苦的情况下
口语·表达雪上加霜
英文释义
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.
典故来源
字面意为'扭动刀子'，比喻在他人痛苦时故意加剧伤害。