investment

这个账户要求至少1000美元的最低投资额。

The account requires a minimum ___investment of $1000.

接受良好的教育是对你未来的一项投资。

Getting a good education is an ___investment in your future.

该项目的成功需要投入大量的时间和精力。

The project's success required a significant ___investment of time and energy.