VERB
令（自己）不自量力；使（自己）因目標過高而失敗
If you say that someone overreaches themselves, you mean that they fail at something because they are trying to do more than they are able to.
例句
He overreached himself and lost much of his fortune...
他的雄心太大，結(jié)果損失了自己大部分的財產(chǎn)。
The company had overreached itself and made unwise investments...
這家公司不自量力地輕率投資。