Oughtness
有义务的状态
🗣️ 情景例句
And how is your daughter?
对了， 你女儿怎么样？
You have to be there half an hour before departure time.
你要在起飞前半小时到那里。
The modern weather models work with a grid of points of the order of sixty miles apart,
现代气象模型以一个坐标图来显示，图中每个点大约是间隔60英里。