b
美 [biː] 
英 
- n.英语字母表的第 2 个字母
 - abbr.(=billion)十亿
 - 网络乙;到;良好
 
B -boy
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1.  | [c][u] 英语字母表的第 2 个字母the second letter of the English alphabet  | 
‘Butter’ begins with (a) B/‘B’. butter 一词以字母 b 开头。  | 
2.  | [c][u] B 音(C 大调的第 7 音或音符)the 7th note in the scale of C major  | 
3.  | [c][u] (学业成绩)第二等,良the second highest mark/grade that a student can get for a piece of work  | 
She got (a) B in/for History. 她的历史科成绩是B。  | 
4.  | [u] (表示两个或两个以上可能性中的)第二个used to represent the second of two or more possibilities  | 
Shall we go for plan A or plan B? 我们选用第一方案还是第二方案?  | 
5.  | [u] (假设的或不指出姓名身份的第二人)乙,乙某used to represent a person, for example in an imagined situation or to hide their identity  | 
Let's pretend A meets B in the park. 假设甲某和乙某在公园里相遇。  |