求翻译：但是人们不会因为碰到困难就退缩，在2008年9月，中国成功将三名宇航员送入太空，并首次实现太空行走，完成了中国载人航天事业最具挑战性的太空任务是什么意思？

But people will not get stuck on the back, in September 2008, three Chinese astronauts into space successfully and to achieve the first space walk, China's manned space industry to complete the most challenging space mission

However, it is not because they encountered difficulties and in September 2008, China's success will be three astronauts into space for the first time, and space walks, completed the China's manned spaceflight cause the most challenging tasks in space

But the people cannot because bumps into difficultly flinches, in September, 2008, China succeeds three astronauts sends in the outer space, and realized for the first time spaces walk, has completed the Chinese man-in-space flight enterprise most challenging outer space task

But people will not encounter difficulty retreat, in September 2008, the three astronauts into space China successfully, and the first spacewalk completed a Chinese manned the most challenging space missions

But people will not encounter difficulty retreat, in September 2008, the three astronauts into space China successfully, and the first spacewalk completed a Chinese manned the most challenging space missions