retro-rocket

英 ['retrəʊˌrɒkɪt] 美 ['retroʊˌrɒkɪt]

• n. 反推进火箭

英英释义

名词 retrorocket:

1. a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course

例句

用作名词 (n.)

1. The propulsion of a rocket requires a great amount of energy.
   推进火箭需要很大的能量。

词汇搭配

• retro rocket 制动火箭