border arc
常见例句
- Known in the weather world as a circumhorizontal arc, this rare sight was caught on film on June 3 as it hung over northern Idaho near the Washington State border.
爱达荷州上空出现的彩虹看起来像是着了火，这种现象在气象学里被称作环地平弧。 - Next, the center of the pie is erased by drawing a white circle, and another arc is drawn to provide a visual border between the interior circle and the peripheral pie slices.
接下来，将绘制一个白色圆形擦掉饼图的中心，并且绘制另一条弧线来提供内部圆形与外围饼图分区之间的可视边界。 返回 border arc