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

分析了双球近旁转向实球多次原理。

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

在完成器变轨后，A飞船将在地球前方绕行太阳，而B飞船则在"后方"绕行。