parting shot
noun [ C ] uk/ˈpɑː.tɪŋ ˌʃɒt/ us/ˈpɑːr.t̬ɪŋ ˌʃɑːt/
临走时说的尖刻话
a remark that you make when you are leaving, so that it has a stronger effect
"And the dress that you bought me doesn't fit either!" was her parting shot. “还有你给我买的那件衣服也不合身！”她临走时扔下这样一句话。