The astronaut can send out a robot which will work on the unknown planet, collecting rocks and minerals, putting up a permanent observation station or traveling far and wide. 宇航员可以派出机器人在这颗陌生的行星上工作，收集岩石和矿物; 建立永久性观察站，或向四面八方走动。
My son's dream is to be an astronaut. 我儿子的理想是当宇航员。
A rocket manned by trained astronauts will launch soon. 载有受过训练的宇航员的火箭马上就要发射了。
The rocket boosts the astronaut into space. 这火箭能把宇航员送入太空。
He'll be an astronaut by the time he is thirty. 在他三十岁的时候他将成为一名宇航员。
