甚至可以从日本借钱放在美国银行挣利率差，这种赚钱方法叫Carry Trade，一直有人做这方面。

https://www.jhinvestments.com/viewpoints/investing-basics/what-is-a-carry-trade-#:~:text=A%20carry%20trade%20is%20an,difference%20between%20the%20two%20rates.