secondary circle的用法和樣例：
例句
- This lack of maritime surveillance and disaster preparedness is not unique to the great circle route, but the nasty local conditions are.
對海運監督的缺失和對海難準備工作的不足，對大圓航線來說並不少見，糟糕的當地情況亦是如此。 - Remarkable is the design-the glass, each piece of glass has a great circle, which is the magpie as paper cutting designs, auspicious motifs sticks.
令人讚歎的是四方聯玻璃中的圖案，每塊玻璃上都有一個大圓，裡面有剪紙式樣的喜鵲登枝等吉祥圖案。
