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retro-rocket的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 retrorocket:
-
a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course
retro-rocket的用法和样例：
例句
用作名词 (n.)
- 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
