to spend a lot of money trying to make something operate successfullyto spend a lot of money trying to make something operate successfully
投入（大量资金） They had been pumping money into the business for some years without seeing any results. 几年来他们一直在为这个企业投入大量资金，可是还没有看到任何成果。
extremely important or necessary for a company, activity, etc. to operate successfullyextremely important or necessary for a company, activity, etc. to operate successfully
（对公司或活动等）极其重要的，必须的 mission-critical applications/systems/software 极其关键的应用／系统／软件
