These B-and-Bs are extremely popular now.

VOA: special.2009.06.01

B Many of you will end up getting Bs, if not at the beginning, by the end of the semester.

你们中会有很多人拿，如果不是在刚开始，到学期末也会有。

耶鲁公开课 - 死亡课程节选

And like, you could probably sit back and get like Bs pretty easily.

拿到B就容易得多，你可以轻松点儿。

是考试期间 - SpeakingMax英语口语达人