早晨的纯洁之光，使我的心渴慕真理，惟有这种仰望真理之心，能使我纯洁如早晨，使我和周围的自然交响乐和谐合拍起来。

The clear, pure light of the morning made me long for the truth in my heart, which alone could make me pure and clear as the morning, tune me up to the concert-pitch of the nature around me.

youdao

我必须保护它们不受野生动物和鸟类的伤害，所以我在它们周围筑了一道篱笆。

I had to protect them from wild animals and birds, so I made a fence around them.

youdao

我正在帮助研究珊瑚和生活在珊瑚礁周围的鱼类。

I'm helping to do research on the coral and the fish that live around the reefs.

youdao

The final piece of advice, this is very important so please pay attention to this, which is, I ask you not to talk to your neighbors during lecture.

最后一点建议,很重要,请注意听好,我要求你们,上课的时候,请不要和你的周围的同学说话

耶鲁公开课 - 基础物理课程节选