It's the interest rate that clears the market for loans and that interest rate determines the market interest rate.

这个利率决定了借贷市场的出清,并决定市场利率的大小

耶鲁公开课 - 金融市场课程节选

That would be a portfolio where you borrowed at the riskless rate and you put more than 100% of your money into the tangency portfolio.

在这种组合里,你可以以无风险利率借贷到一些资金,从而可以投入比你本金更多的资金,来购买切线投资组合。

耶鲁公开课 - 金融市场课程节选