这两项技术的区别又是什么呢？

And what are the differences between these two technologies?

youdao

自私和自爱的区别又是什么呢？

What is the difference between being selfish, and of being self loving?

youdao

青蛙收集和鉴别又给加重了我们的困难。

Frog collections and identifications add an additional level of difficulty.

youdao

Why aren't I allowing the soul theory to say, "Don't blame us. We don't know how to explain it yet."

而又为什么不允许灵魂理论说,别责怪我们,我们只是还不知道怎么去解释

耶鲁公开课 - 死亡课程节选