step rocket

• n. 多级火箭

英英释义

Noun:

1. 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

例句

用作名词 (n.)

1. Rockets with more than one stage are called step rockets.
   多于一级的火箭称为多级火箭。
2. 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。

近反义词

【近义词】

• multistage rocket 多级火箭