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102页(279字)
形容忘恩负义的人,例他全凭李某的介绍才能进这家公司工作,怎料他过河拆桥,得势后反将李某赶走。
That he was able to join this company was due entirely to Mr.Li.Who would believe that once in a top position,he would actually drop his bencfactor and go so far as to throw him out.