This height is calculated relative to an average elevation determined for the moon's surface, since there is no such thing as a "sea level" as a reference on the moon.
这个高度是对比月球表面平均高度后计算出来的，因为月球表面并没有“海平面”作为参照。
The height of a thing above a reference level, especially above sea level or above the earth's surface.
海拔，高度特定水平线上的高度，如太阳或星辰之于地平线之上者；
应用推荐