一个飞盘是有边缘，所以可以，让它绕着边缘上某点旋转，就像这样，绕边缘点转动它。
A Frisbee has this rim so you can actually try to make it rotate around the point on the circumference by holding it near the rim and spinning it there.
特别地，绕平面上一点旋转物体，同样可以想象，旋转一个实体。
In particular, we have been rotating things about just a point in the plane What you could imagine also is instead you have your solid.
如果在这里取一个点，它会绕x轴上一点旋转。
If you take this point here, it is going to go in a circle like that centered on the X-axis.
旋转，绕转：围绕一个点的轨道运动，尤指区别于绕轴旋转的。
Orbital motion about a point, especially as distinguished from axial rotation.
设P和Q为平面内两个互不相交的简单多边形 ，若 P在平面内绕某点旋转 ，文中讨论了其旋转可移动性问题 。
Let P and Q be two nonintersecting simple polygons in the plane, this paper discusses the rotational movability of them if P rotates around a point and collides with Q .
所有的坐垫要能够做到相对于用力方向的绕轴旋转以及该旋转点要和承载面尽可能地靠拢。
All loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot point shall be as close as practically possible to the load surface.
所有的坐垫要能够做到相对于用力方向的绕轴旋转以及该旋转点要和承载面尽可能地靠拢。
All loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot point shall be as close as practically possible to the load surface.
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