“经圈”例句

单词 经圈 例句 DEFINITIVE EXAMPLES 权威例句〔vertical circle〕A great circle on the celestial sphere that passes through the zenith and the nadir and thus is perpendicular to the horizon.平经圈：与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点美国传统...