astronaut
/ˈæstrəˌnɑt/
a person trained to travel in a spacecraft
Chinese meaning: 宇航员；航天员
The astronaut conducted experiments aboard the International Space Station.
宇航员在国际空间站上进行了实验。
Becoming an astronaut requires years of rigorous training.
成为宇航员需要多年的严格训练。