If you have a white wall, that's when we did Zen meditation, it's easier if you're just facing a wall.

如果家中有面空墙，我们可以进行坐禅，面对空墙会相对容易。

普林斯顿公开课 - 人性课程节选

These two characters are as if there is a wall between them, a wall of foam.

在这两者之间,就像是有一堵墙，一堵用泡沫筑成的墙。

耶鲁公开课 - 1945年后的美国小说课程节选

We focus on one because we are paying for it, but the wall is doing the opposite.

我们只关注某一边因为我们只对这一边施力,但是墙对另一边有反向的作用力

耶鲁公开课 - 基础物理课程节选

There's a wall there.

它们之间有一堵墙。

普林斯顿公开课 - 人性课程节选