要办成这件事，需要经过重重关卡。 ( To do this, you need to go through various levels. )

市场经过重新洗牌将原有几家落后企业淘汰出局了。 ( After the market was reshuffled, several original backward companies were eliminated. )

经过重组和转制，公司效益大幅提高。 ( After reorganization and restructuring, the company's efficiency has been greatly improved. )