astronaut selection criteria

例句：

1. 1.The selection criteria for astronauts are strict and diverse.
   宇航员的选拔标准严格且多样。
2. 2. The selection process for astronauts is rigorous and thorough.
   宇航员的选拔过程严谨且彻底。
3. 3. The criteria for selecting astronauts include physical fitness, cognitive abilities, and psychological stability.
   选择宇航员的标准包括身体健康、认知能力和心理稳定性。