Ug
abbr. 地下（underground）
??? 情景例句
Where's your grandson Robbie and his friend Alexandra?
你的孫子Robbie和他的朋友Alexandra呢？
Did you go to the concert yesterday?
你昨天去聽音樂會了嗎？
Have we been introduced?
對不起，我們彼此介紹過了嗎？