现在，你们在这个伟大的学府中学习，生活在这个伟大的国家，你和你的家庭体验这个伟大的时代，这些就是你们以及做好准备的最大证明。

The fact that you are here now at this great institution, in this great state, at this great moment for both you and your families is a testament to the fact that your preparation has begun.

youdao

这完全取决于你的选择，和你如何看待困境的心态。把每件事看做学习的机会能让生活更加愉悦，特别是在深陷困境的时候。

It all depends on perspective; on how you see the situation. Viewing everything as a learning experience makes life more pleasurable, even during the hard times.

youdao

你会学习怎样更健康地生活，以及更有效地面对自己，生活和你周围的人事。

You will learn how to become healthier, and to respond more effectively to yourself, your life, and those around you.

youdao

This is when you learn the laws in terms of which you can understand and explain a large number of phenomena.

从此刻开始,你们学习的理论,能帮助你理解和解释生活中的很多现象

耶鲁公开课 - 基础物理课程节选