Now there are challenges to a plant based diet which made eating meat important to humans in human history.

在人类历史上,以素食为主的饮食方式面临各种挑战,使得进食肉类变得重要

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We've had episodes in our history when real interest rates have made major moves and these movements are very important for what is happening in our lives.

历史上有一些真实事件,实际利率发生很大的变化,这些变化对我们的生活,有非常重要的影响

耶鲁公开课 - 金融市场课程节选

Now, one of the points I made last week, for those of you who were here, is that one of the themes that ties European history together is the growth of the modern state, of state-making.

上节课来了的人可能记得,我谈到一个观点,现代国家的形成和民族国家的构建,是联系欧洲历史的一个主题

耶鲁公开课 - 欧洲文明课程节选