Shud
abbr. should 应，应该
🗣️ 情景例句
Well, what's the weather going to be like?
那么， 明天的天气怎样？
What do economists say about the present crisis?
经济学家们对于现在的危机做何说法？
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）