无风险回报率基本上没有风险的资产的利率。

Risk Free Rate of Return The quoted rate on an asset that has virtually no risk.

youdao

但是在那些奇特的金融产品中，长长期望后的回报可能是零，或者最终低于无风险利率。

But in more exotic asset classes, the long-term expected return may be zero, or at least less than the risk-free rate.

youdao

巴西投资者仅仅把资金投入毫无风险的债券就能获得丰厚回报，这种日子已一去不返。

Brazilian investors can no longer reap extraordinary returns just from parking their money in risk-free bonds.

youdao

Now, assuming that we trust the government-- I think the U.S. Government has never defaulted on its debt-- we'd take that as a riskless return.

假设我们信任政府-,假设美国政府从未拖欠债务-,可以把它当作无风险回报。

耶鲁公开课 - 金融市场课程节选