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

Now, D here stands for debt; a minute ago I was using Div to stand for dividends.

这里D代表着债务,之前我曾用Div来代表股利

耶鲁公开课 - 金融市场课程节选