英语字母表的第2个字母；
同义词：bacillus
originally thought to be a single vitamin but now separated into several B vitamins同义词：B-complex vitaminB complexvitamin B complexvitamin BB vitamin
a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder同义词：boronatomic number 5
a logarithmic unit of sound intensity equal to 10 decibels同义词：Bel
(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter同义词：barn
the 2nd letter of the Roman alphabet同义词：letter b
the blood group whose red cells carry the B antigen同义词：type Bgroup B
party b乙方
hepatitis b n. 乙型肝炎
b virus［病］B病毒
hepatitis b virus乙型肝炎病毒；[病毒学]B型肝炎病毒
b cellB细胞
rhodamine b[化]罗丹明B；[化]若丹明B
hepatitis b vaccine n. 乙肝疫苗；乙型肝炎疫苗
amphotericin b两性霉素B
epidemic encephalitis b流行性乙型脑炎
b flat脚掌平伏
vitamin b complex复合维生素B
b lymphocyteB淋巴细胞
b to b 企业对企业（电子商务的一种，Business to Business）
n b abbr. （拉）注意（nota bene）；英国北部（North Britain）；新不伦瑞克市（New Brunswick）
linear b n. （古希腊的）B类线形文字
japanese b encephalitis流行性乙型脑炎；日本乙型脑炎
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