As much as I might talk on stage twice a week it turns out that it's really by doing and really by diving in and getting your hands dirty that you really take away the course's lessons.

我一周上两次课,就算说得再多，也不如你们亲自动手,通过真正的深入研究,才能学到知识。

哈佛公开课 - 计算机科学课程节选

And it turns out that the Schrodinger equation is an equation of motion in which you're describing a particle by describing it as a wave.

结果是薛定谔方程,用描述粒子波动性的方式,来描述这个粒子。

麻省理工公开课 - 化学原理课程节选

The soldier becomes, in fantasy here, the spectator, as the war turns around and comes back, reversed by a kind of evil charm or spell, coming home.

在想象中这名士兵成为了旁观者，在战争转回再次回来的时候，被一种邪恶的咒语推翻，再次回来。

耶鲁公开课 - 现代诗歌课程节选