So yet once more -- and I promise this will be one of the last times that we look back at Milton's mask - but yet once more, let's look at Comus.

因此我们要再一次--我保证,这将是我们最后一次回顾弥尔顿所写的这出面具戏,不管怎么着，让我们再次回顾《科玛斯》

耶鲁公开课 - 弥尔顿课程节选

Some, like the smallpox vaccine on one exposure generates a very high response that lasts for many years so you don't need a boost.

有一些疫苗,比如接触一次天花疫苗后,人体就能产生高水平的免疫应答,并持续很多年,所以无需再次接种

耶鲁公开课 - 生物医学工程探索课程节选

I suspect that with the subprime crisis the Fed will be pushing real interest rates down dramatically again and we may be in a period of negative real interest rates again.

我推测,由于次贷危机,美联储会又一次大幅下调实际利率,我们可能会再次进入,负实际利率的时代

耶鲁公开课 - 金融市场课程节选