B2 to put money, effort, time, etc. into something to make a profit or get an advantage投(资),投入
More examples
France and Germany invest far more per capita in public transport than Britain.
There is a quirk in the rules that allows you to invest money without paying tax.
Dean tricked the old lady into giving him £800, claiming that he would invest it for her.
The return on the money we invested was very low.
By investing small amounts regularly, you can smooth out the effects of sudden rises and falls in the stock market.
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