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step rocket的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
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的用法和樣例：
例句
用作名詞 (n.)
- Rockets with more than one stage are called step rockets.
多於一級的火箭稱為多級火箭。 - As the step rocket goes up, some of the stages at the side fall away.
當多級火箭上升時，邊上的幾級火箭就脫落了。
