parting shot

柯林斯词典

1. N-COUNT If someone makes a parting shot, they make an unpleasant or forceful remark at the end of a conversation, and then leave so that no one has the chance to reply. 臨別時撂下的狠話
He turned to face her for his parting shot. "You're one coldhearted woman, you know that?"
他臨走時轉過身，曏她甩下一句“你是個冷漠無情的女人，你知道嗎？”。