Gee, have you ever wondered how they know the composition of stars that are light-years away?

嘿！你曾经是否想过,他们是怎么知道那些离我们好几光年远的,星星的位置的？

麻省理工公开课 - 固态化学导论课程节选

It is kind of haunting when you think it's only 1831 when he writes this, and that Civil War is still 30 years away: "Slavery brutalizes the black population and debilitates the white.

这段话在人们脑海中挥之不去,因为他写下这段话时才1831年,离开内战爆发还有30年时间,"奴隶制残害了黑人,也削弱了白人

耶鲁公开课 - 美国内战与重建课程节选

Around seven years of age going up through puberty, the ability to learn language starts to go away.

大约七岁的时候开始,一直到青春期,学习语言的能力逐渐减弱

耶鲁公开课 - 心理学导论课程节选

And another person from Harvard, Philip Stone one of the parents of positive psychology was Philip Stone, who passed away two years ago, yesterday.

还有一位哈佛的教授，积极心理学的另一位父辈，两年前的昨天去世了。

哈佛公开课 - 幸福课课程节选

This means the Israelites will have to wander for 40 years in the desert until all of those who left Egypt as adults pass away, leaving a new generation that hasn't really tasted slavery, to enter the land and form a new nation.

这意味着，犹太人必须在沙漠中流浪40年,直到所有一起出埃及的人过世，留下没有做过奴隶的，新一代人，进入应许之地，建立一个新的国家。

耶鲁公开课 - 旧约导论课程节选

You don't want--you know that you'd like to take money away from yourself in the high-outcome years and give it to yourself in the low-income years.

你不想...你知道,你想在高收入的年份中,拿出一点钱,给你自己低收入的年份

耶鲁公开课 - 金融市场课程节选

Meanwhile, his youth was going away and now this imaginary student is now thirty-three years old never had time to marry or start a normal life.

与此同时，他的青春年华也已经逝去了,现在这位设想出来的同学已经33岁了,还没有结婚也没有开始正常人的生活。

耶鲁公开课 - 金融市场课程节选