rocket sled

例句：

1. 1.The rocket sled was launched into space for the first time.
   火箭雪橇首次被发射入太空。
2. 2. The rocket sled was used to test the new propulsion system.
   火箭雪橇用于测试新的推进系统。
3. 3. The rocket sled was a marvel of engineering and technology.
   火箭雪橇是工程和科技的奇迹。