Staged vehicle
多级火箭
🧩 词语组成解析
a. 分期的
🗣️ 情景例句
What do you consider important when looking for a job?
你选择工作时主要考虑是什么？
Never trust another what you should do yourself.
自己应该做的事，决不要委托别人做。
decided to take some presents to a children's hospital.
盖茨决定送些礼物给儿童医院。