B

英 [biː]

美 [biː]

n. 英语字母表的第2个字母; B音(C大调的第7音或音符); (学业成绩)第二等，良
symb. B级公路(英国公路代号，后接数字)

BNC.2992

习惯用语

from A to B

noun

英语字母表的第2个字母
the second letter of the English alphabet
1. ‘Butter’ begins with (a) B/‘B’.
  butter一词以字母b开头。
B音（C大调的第7音或音符）
the 7th note in the scale of C major
（学业成绩）第二等，良
the second highest mark/grade that a student can get for a piece of work
1. She got (a) B in/for History.
  她的历史科成绩是良。
（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
1. Shall we go for plan A or plan B?
  我们选用第一方案还是第二方案？
（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
1. Let's pretend A meets B in the park.
  假设甲某和乙某在公园里相遇。

symbol

B级公路（英国公路代号，后接数字）
used in Britain before a number to refer to a particular secondary road
1. the B1224 to York
  通往约克郡的B1224号公路

英语字母表的第2个字母
Bis the second letter of the English alphabet.
C大调音阶中的第七音；B音
In music,Bis the seventh note in the scale of C major.
（作业、考试等的）乙等，良好
If you get aBas a mark for a piece of work or in an exam, your work is good.
（用于首字母为b的一些单词的缩写，如born）
Borbis used as an abbreviation for words beginning with b, for example 'born'.

My mark in physics is B.
我的物理学得了“b”。
Their solution was to isolate specific clones of B cells and fuse them with cancer cells
他们的解决方案是分离出特定的B细胞克隆，然后将它们和癌细胞结合。
Draw a line from A to B.
从A到B划一条线。
She went from a D in her mocks to a B in the real thing.
她模拟考试得了D，到了真正考试的时候却拿了个B。
Candidates who answered 'b' could be awarded half marks for demonstrating some understanding of the process
回答b的选手表明对这个过程有所了解，因此可以得到一半的分数。
I got a B for my last essay, but only a B minus for this one.
我上一篇作文得了个b，但这一篇只得b-。
A+ b and A-B are both factors of a2-b2.
a+b和a-b都是a2-b2的因式。
We should require that every student is immunized against hepatitis B
我们应要求每个学生都注射乙肝疫苗。
He passed through the doorway into Ward B
他穿过门口进入B病房。
A grade B judge could only be allowed to judge alongside a qualified grade A judge.
B级裁判只能协同有A级资质的裁判进行评判。