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. 临别时撂下的狠话
He turned to face her for his parting shot. "You're one coldhearted woman, you know that?"
他临走时转过身，向她甩下一句“你是个冷漠无情的女人，你知道吗？”。