wù / tǐ / rào / zhóu / xuán / zhuǎn / shí / suǒ / yǒu / diǎn / de / yùn / dòng / guǐ / jì / dōu / yǔ / zhè / ge / zhóu / yǒu / guān

物体绕轴旋转时，所有点的运动轨迹都与这个轴有关。

When an object rotates about an axis, the paths of all its points are related to that axis.