The rocket is long and slender, and fatter on top because its second stage is thicker than its solid rocket motor-powered first stage.

火箭又长又细，上部有点粗，因为它的第二级比固体燃料火箭发动机驱动的第一级要厚。

youdao

Patients often present in one of three clinical stages. The first stage consists of cerebellar signs (such as ataxia), apathy and motor restlessness.

临床分期分三期，第一期包含有小脑症状（如共济失调），情感冷漠和坐立不安。

youdao

J-1's first stage, and Nissan will complete a liquid-methane-fuelled motor that it has in the works for the second stage.

ECONOMIST: Sayonara, spaceflight?