Your steering wheel works, so you can turn the trolley car, if you want to, onto the side track killing the one but sparing the five.

而你的方向盘还没坏，只要你想，就可以把电车转到侧轨上去,牺牲一人挽救五人性命。

耶鲁公开课 - 公正课程节选

Now, you'll hear reports in the literature, you'll look in the newspaper, you'll hear about scientists that have found ways to trans-differentiate cells, that is move them from one pathway to the other.

如今,你通过听文献讲座,看报纸,会听说科学家们已经发现了,转分化细胞的方法,即把这些细胞从一种分化途径转到另一种

耶鲁公开课 - 生物医学工程探索课程节选

So you can see if you take phi, and you move it over 90 degrees, we're right here in the y z plane.

你们可以看到，把phi转到９０度，它就是ｙｚ面。

麻省理工公开课 - 化学原理课程节选