Staged vehicle
多级火箭
🧩 词语组成解析
a. 分期的
🗣️ 情景例句
is tomorrow morning at ten o'clock.
明天早上十点。
Could you take a picture for me?
你能帮我拍照吗？
I think we can draw up a tentative plan now.
我认为现在可以先草拟一具临时方案。