manned space flight program

• 载人航天项目

manned space flight program的用法和样例：

例句

1. Rick applied a fourth time for the space program and got the call from NASA the same week I found out I was pregnant with our second child.
   里克第四次申请参加航天项目，得到了国家航空航天局的征召，同一星期内，我发现我自己怀上我们的第二个孩子。