Mbb
abbr. make before break 在突变之前制造; mortgage-backed bonds 由财力支持抵押债务
🗣️ 情景例句
What's wrong, Susan?
怎么啦， Susan？
How long have you studied English?
你学英语多久了？
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。