throw (someone/something) on the scrap heap - to get rid of someone or something that is not wanted or needed any more.
These kids are on the scrap heap as soon as they leave school.
英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。