So, say you have the education, experience, and physical and mental ability to get accepted to an astronaut training program, this is when the challenge really begins.

不过，就算你拥有进入宇航员训练计划所需的教育经历、工作经验、身体和心理素质，真正的挑战才刚刚开始。

As the first astronaut training program in the world - America was still dicking about with chimpanzees at this stage - Star City's trials pushed the 20 pilots to their limits.

作为世界上第一个宇航员训练项目，星城的试验将20名飞行员推向了极限——当时美国还在捣鼓黑猩猩。