三名中国宇航员乘坐"神舟七号"宇宙飞船到达了太空,并进行了太空行走,发现了许多有趣的事,但没有发现任何

"The Shenzhou 7 mission marks a historic breakthrough in China's manned space program," Zhai said."It is a great honor for all three of us to fly the mission,and we are fully prepared for the challeng...