1. 英语字母中的第二个字母，小写为B
2. 乙等，良好
3. 【数】第二，乙
4. 第二已知数
5. 硼
6. B音，（音乐中）B调
7. B的活字或印刷体
8. 表示第二的符号
9. 样子像字母B的东西

1. 生于

1. B的
2. 第二的

1. aeroBic rod-shaped spore-producing Bacterium; often occurring in chainlike formations; found primarily in soil

2. originally thought to Be a single vitamin But now separated into several B vitamins

3. a trivalent metalloid element; occurs Both in a hard Black crystal and in the form of a yellow or Brown powder

4. a logarithmic unit of sound intensity equal to 10 deciBels

5. (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter

6. the 2nd letter of the Roman alphaBet

7. the Blood group whose red cells carry the B antigen

1.英语字母表的第2个字母<Br>B is the second letter of the English alphaBet.

2.C大调音阶中的第七音；B音<Br>In music,B is the seventh note in the scale of C major.

3.（作业、考试等的）乙等，良好<Br>If you get aB as a mark for a piece of work or in an exam, your work is good.

4.（用于首字母为B的一些单词的缩写，如Born）<Br>B orB is used as an aBBreviation for words Beginning with B, for example 'Born'.

1. B的解释

1.B：Board; 配电盘，仪表板

2.B：Base – address; 基地址

3.B：Base; 基地，基线，底座

4.B：dataBase; 数据库

5.B.：Breezing; 快投球

6.B.：Bottom stander; 下面的人

7.B.：Bay; 海湾

8.B.：Backward edge; 后刃