unmanned spacecrafts 无人航天器
spacecraft launch 航天器发射
advanced spacecrafts 先进航天器
spacecraft technology 航天器技术
A: How many spacecrafts are currently in orbit?
A：目前轨道上有多少架航天器？
B: There are thousands of spacecrafts orbiting our planet.
B：有成千上万的航天器绕着我们的星球运行。
1) 航天器
2) 宇宙飞船
3) 太空载具
1. 航天器
noun
1. Vehicles used for traveling in space.