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

分析了双月球近旁转对月球多次探原理。

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

在完成对探轨后，A飞船将在地球前方绕行太阳，而B飞船则在"后方"绕行。