| 例句 |
nounverb to draw an arc using a compass the arc of a rainbow彩虹的弧形 The beach swept around in an arc. 海滩呈弧形伸展开来。 firing shells in a high arc over our heads forming a perfect arc in the sky Set the point of the compasses at one end of the line and draw an arc. The arc of the rainbow reached out across the valley. For a few seconds a perfect rainbow arced across the city. |