arc

The beach swept around in an arc.

海滩呈弧形伸展开来。

The helicopter made a slow arc, passing over the mound but not stopping.

这架直升飞机做了一个缓慢的弧线运行，飞过那座小丘，但没停下来。

Electric arcs can generate heat by striking.

电弧可以通过撞击产生热量。

Her transformation creates the emotional arc of the novel.

她的转变为小说创造了情感发展轨迹。

The ball arced across the sky.

球呈弧形划过天空。

Not surprisingly, the costs arc steep.

不足为奇的是，成本非常高。