circle是什么意思译

例句：

The axis of a circle is its diameter.

圆的对称中心线就是直径。

He used a rope to mark off the circle.

他用一根绳子把这个圈围了起来。

She walked clockwise around the circle.

她绕着圈顺时针走。

The line cuts the circle at two points.

那条线与圆相交于两点。

She walked the horse round in a circle.

她牵着马兜圈子。