turn back on
背棄、對某人不再支持、對某事不再參與
口語·表達背棄或拒絕
英文釋義
to abandon or reject someone or something
例句
He turned his back on his friends when they needed help.
典故來源
源于轉身離開的肢體動作,象征拒絕或拋棄某人或某事。