origin of coordinate的用法和样例：
例句
- Drag onto the page, then drag one line end to ordinate origin and one to the feature.
拖到绘图页上，然后将一个线端拖到坐标原点，一个线端拖到部件。 - This point, and the global Cartesian coordinate system origin, define the line along which the object is viewed while looking toward the origin.
这个点，连同全局笛卡尔坐标原点，定义了当我们朝向原点观察时，观察的视线。
