distance circle of position 距离船位线 ; 船位圆
great circle distance 沿大圆弧的距离 ; [测] 大圆距离 ; 大圆距
distance learning circle 远程学习圈
point-circle distance 点圆最近距离
The Great Circle Distance 大圆距离
distance by great circle track 大圆航程
The whole barricade hastened up, then all ranged themselves in a circle at a distance, feeling that it was impossible to utter a word in the presence of the thing which they were about to behold.
整个街垒里的人全跑来了，他们远远地站成一个圈子，心里都感到自己对那即将见到的事无法进一言。
In other cases, a spherical model is used, and the primary distance calculation used is the great-circle distance (see Resources).
在其他情况下使用球面模型，所使用的主要距离计算为大圆弧长(参见参考资料)。
For the purposes of this article, I will demonstrate distances using the flat-Earth model and the great-circle distance and leave the rest to you to explore.
但是为了实现本文的目的，我将使用平面地球模型和大圆弧长距离来演示距离，其他方法留给读者探索。
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