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1·You can determine latitude from the Angle between a celestial object and the horizon, and you can calculate longitude from the Earth's rotation.

根据空中某个物体与地平线之间的角度可以确定纬度，然后根据地球旋转计算出经度。

2·Horizon latitude: the angular distance of a celestial object above the horizon.

地平纬度：地平线以上天体的角度距离。

3·Either half of the celestial sphere as divided by the ecliptic, the celestial equator, or the horizon.

半天球被黄道，天赤道或地平圈分成两半的天球的一半…