And so by listening and encouraging, I help students see that there's a way to resolve any challenges that they might face.

如此，通过倾听和鼓励，我让学生们看到他们有办法,去应对面临的一切挑战。

普林斯顿公开课 - 人性课程节选

Because it also means that every day we don't do something, we are not meeting a challenge.

因为这意味着,如果每天我们不去做些事情的话，我们所面临的挑战。

普林斯顿公开课 - 人性课程节选

Well, crossword puzzles aren't a very deep subject, and we might wonder whether or not we would do better if we were engaged in something more mentally challenging than that.

填字游戏不算很深奥的东西，我们也不知道自己能否做得更好,如果我们去做,比填字游戏更富挑战性的事情。

耶鲁公开课 - 死亡课程节选