So, think of a line as the trajectory of a moving point.

把直线看作运动点的轨迹。

youdao

Line is the mark made by a moving point, such as a pencil or brush.

线是由动点构成的，如铅笔或笔刷。

youdao

Line is the mark made by a moving point, such as a pencil or brush.

线是由动点构成的，如铅笔或笔刷。

youdao