The theory for exploring the moon time after time through double lunar swingby is analyzed at first.

分析了双月球向实现对月球多次探测原理。

After completing lunar swingby maneuvers, the A spacecraft is intended to orbit the Sun "Ahead" of planet Earth, and the B spacecraft "Behind".

在完成对探测器变，A船将在地球前方绕行太阳，而B船则在"方"绕行。