| 单词 | multistage |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔booster〕The primary stage of a multistage rocket that provides the main thrust for launch, liftoff, and initial flight.助推器：多级火箭的第一级，为发射、升空和最初飞行提供主要推力美国传统〔posigrade〕Of, relating to, or being an auxiliary rocket on a multistage spacecraft that is fired in the direction of the spacecraft's motion to separate the sections.正加速度的火箭：多节航天器上的辅助火箭的，这种火箭点燃后沿航天器运行方向推进，并分为几部分美国传统〔staging〕The act of jettisoning a stage of a multistage rocket.级分离：多极火箭放弃一级的行为美国传统 |
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