zero-G test

例句：

1. 1. The astronauts performed the zero-G test to ensure their survival in space.
   宇航员进行了零重力测试，以确保他们在太空中的生存。
2. 2. During the zero-G test, the astronauts experienced extreme weightlessness.
   在零重力测试期间，宇航员体验到了极端的失重感。
3. 3. The zero-G test is crucial for understanding how humans adapt to microgravity environments.
   零重力测试对于理解人类适应微重力环境至关重要。