Learner's definition of APOGEE
[singular]
1
formal : the highest point of something最高点;顶峰 2
technical : the point in outer space where an object traveling around the Earth (such as a satellite or the moon) is farthest away from the Earth远地点(太空中绕地球运动的天体在运行轨道上离地球最远的点) — compare perigee