弧形

1. 旋转线，次摆线圆在固定直线上滚动时，圆上一点或与圆相连的一点的弧形轨迹
   A curve traced by a point on or connected with a circle as the circle rolls along a fixed straight line.
2. 高高飞起的球成弧形飞向看台
   The high fly ball arched toward the stands.

弧的英语翻译：

形的英语翻译：