a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
双语例句
用作名词 (n.)
He hid behind a great bowlder and fell to listening. 他躲在一块大圆石后面，静静地听着。
This lack of maritime surveillance and disaster preparedness is not unique to the great circle route, but the nasty local conditions are. 对海运监督的缺失和对海难准备工作的不足，对大圆航线来说并不少见，糟糕的当地情况亦是如此。
