nuclear-thermal rocket

例句：

1. 1.The nuclear-thermal rocket has been the main propulsion system for spacecraft.
   核热火箭一直是太空船的主要推进系统。
2. 2. This new nuclear-thermal rocket technology could revolutionize space travel.
   这项新的核热火箭技术可能会彻底改变太空旅行。
3. 3. The nuclear-thermal rocket is a powerful tool for exploring the outer planets.
   核热火箭是一种强大的探索外行星的工具。