1. | [ususing] （指叫不上名字的人、物，或泛指）某某人（或事物）used to refer to a person, thing, etc. when you do not know their name or when you are talking in a general way |
What would you say to Mrs So-and-so who has called to complain about a noisy neighbour? 要是哪位太太嫌邻居太吵闹，打电话投诉，你怎么跟她说？ |
2. | 恼人的家伙；讨厌鬼an annoying or unpleasant person. People sometimes sayso-and-so to avoid using an offensive word. |
He's an ungrateful so-and-so. 他是个忘恩负义的家伙。 |
