1. 投资
    Investment is the activity of investing money.

investment的近义词

    e.g. He said the government must introduce tax incentives to encourage investment...
           他说政府必须推出税收激励政策来鼓励投资。
    e.g. One of the most important changes concerns the investment of pension contributions.
           最重要的一个变化涉及养老保险基金的投资。

2. 投资金额;投资物
    An investment is an amount of money that you invest, or the thing that you invest it in.

    e.g. ...an investment of twenty-eight million pounds...
           2,800万英镑的投资金额
    e.g. You'll be able to earn an average rate of return of 8% on your investments.
           你将能获得 8% 的平均投资收益率。

3. 有用的投资物;值得买的东西
    If you describe something you buy as an investment, you mean that it will be useful, especially because it will help you to do a task more cheaply or efficiently.

    e.g. When selecting boots, fine, quality leather will be a wise investment...
           在挑选长筒靴的时候,购买上等的好皮靴将是明智的选择。
    e.g. A small-screen portable TV can be a good investment.
           小屏幕的便携式电视机很值得买。

4. (时间、精力的)投入
    Investment of time or effort is the spending of time or effort on something in order to make it a success.

    e.g. I worry about this big investment of time and effort.
           我担心投入这么多时间与精力却不起作用。