出处:按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第109页(192字)
表示坚决断绝关系,例他为求自保竟弃朋友于不顾,我们的情谊也因此一刀两断。
We broke off our relationship completely when he deserted a mutual friend who was in need of urgent help.