the act of putting money, effort, time, etc. into something to make a profit or get an advantage, or the money, effort, time, etc. used to do this

The government wanted an inflow of foreign investment. 政府希望看到外资涌入。

Stocks are regarded as good long-term investments. 证券被认为是很好的长期投资产品。

The account requires a minimum investment of €1,000. 这个帐户最少需要存入1000欧元。

There's been a significant investment of time and energy in order to make the project a success. 为了这个项目的成功，已经投入了大量的时间和精力。