Underpitch
vault [建]( 由一個或幾個緩坡穹窿與一中心穹窿交叉構成的)低坡穹窿
??? 情景例句
May I speak to Miss Hu, please?
可以請胡小姐聽電話嗎？
Today is Monday.
今天是星期一。
I'm fine, thanks. And you?
我很好，謝謝。你呢？