And,as Red and white Polish flags fluttered, giant lights beamed video footage of the German invasion at a wall of the monument.

VOA: standard.2009.09.01

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

Maybe we could leave this wall white and paint the other wall red.

也许我们可以把这面墙留白，把另一面墙刷成红色。

I'm glad 实战 - SpeakingMax英语口语达人

The first step in the process is when I was Deputy WHCF, that I put on the wall a big white board calendar.

程序的第一步是,当我还是办公室副主任，我在墙上安了个,白色的日历板。

普林斯顿公开课 - 国际座谈会课程节选