cryogenic propellant rocket engine

例句：

1. 1. The cryogenic propellant rocket engine is a revolutionary technology that could change the way we travel.
   低温推进剂火箭发动机是一种革命性的技术，可能会改变我们旅行的方式。
2. 2. This new cryogenic propellant rocket engine has significantly improved its efficiency and reduced its weight.
   这种新型的低温推进剂火箭发动机已经显著提高了其效率并减少了重量。
3. 3.The development of cryogenic propellant rocket engines holds great promise for future space exploration.
   低温推进剂火箭发动机的开发对于未来的太空探索有着巨大的潜力。