The sides of the mountain are almost perpendicular.(山的两侧几乎是垂直的。)
Then it becomes zero when I perpendicular, and then it becomes negative.(当垂直时，它变到，然后它变为负数。)
And so it was rotating like this and was perpendicular to the disk.(它这样旋转，垂直于圆盘。)
Well, it's the direction that's perpendicular to this plane.(它其实是朝垂直于平面的方向。)
What she's going to do is to start loading up the electrons, and you see this wand here move slowly, and start become perpendicular.(她要做的是开始加载电子，你可以看到这个棒子移动得很慢，并开始变得垂直了。)
We made two slits for the eyes and a perpendicular line for the nose.(我们划了两道缝儿做眼睛,一条竖线做鼻子。)
And the force is perpendicular to the arm.(力是垂直于杆。)
The wall is a little out of the perpendicular.(墙壁有点倾斜。)
In other words, it's perpendicular to the plane of the two vectors.(换句话说，它垂直于，两个向量所处的平面。)
