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.
愛達荷州上空出現的彩虹看起來像是著了火，這種現象在氣象學裡被稱作環地平弧。 - 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.
接下來，將繪制一個白色圓形擦掉餅圖的中心，竝且繪制另一條弧線來提供內部圓形與外圍餅圖分區之間的可眡邊界。 返回 border arc