The rocket consists of a giant core stage flanked by two solid rocket boosters, each slightly larger than the first stage of Ares I.

火箭有一个巨大的核心，两侧是两个固体火箭助推器，每个比战神i的第一级稍微大一些。

youdao

NASA plans to use a five-segment shuttle booster as the first stage of its Ares I rocket, one of two being designed as part of the post-shuttle Constellation program.

NASA计划用五级航天飞机助推火箭作为Ares I火箭的第一级，Ares i是淘汰航天飞机后的星座计划使用的两种火箭之一。

youdao

The two-stage rocket, called Korea Space Launch Vehicle I or KSLV-I, blasted off at 5 p.m. into blue skies from the seaside Naro Space Center, near the city of Goheung on the country's south coast.

被称作“韩国航天运载器一号”的两级火箭是周二下午5时从韩国南部海岸高兴郡的罗老宇航中心发射升空的。

youdao

Two-and-one-half minutes after the Apollo Eleven launch, the first-stage rocket separated from the spacecraft.

VOA: special.2009.07.15

He adds that the newer version has a shorter launch time, better deterrent capability, and that it is a two-stage rocket using solid fuel that is highly maneuverable.

VOA: standard.2009.12.18

The firm, established by Amazon entrepreneur Jeff Bezos, has a design for a capsule and two-stage rocket.

BBC: US firms target astronaut flights

The concept calls for a two-stage rocket that would be powered by engines burning liquid oxygen and kerosene.

BBC: Science & Environment

It is a two-stage rocket powered by liquid oxygen and kerosene.

BBC: The new Falcon 1 rocket has been lost on its maiden flight.