Staged vehicle
多级火箭
🧩 词语组成解析
a. 分期的
🗣️ 情景例句
What do you think of the terms of payment?
关于付款条件你们有什么意见？
Learning is better than house and land.
学问是一生的财富。
four girls and a boy, an event which radically changed their lives.
4女1男。这事使他们的生活发生了根本的变化。