Unfortunately, the instantaneous interest rate does not exist in real world, so we must use short-term interest rates as its proxy.

但是瞬时利率在现实生活中并不存在，往往要用短期利率进行替代。

youdao

Unfortunately, the instantaneous interest rate does not exist in real world, so we must use short-term interest rates as its proxy.

但是瞬时利率在现实生活中并不存在，往往要用短期利率进行替代。

youdao