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step rocket的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
-
a rocket having two or more rocket engines (each with its own fuel) that are fired in succession and jettisoned when the fuel is exhausted
step rocket的用法和样例：
例句
用作名词 (n.)
- Rockets with more than one stage are called step rockets.
多于一级的火箭称为多级火箭。 - As the step rocket goes up, some of the stages at the side fall away.
当多级火箭上升时，边上的几级火箭就脱落了。
