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class B
busin.	B类; B级; 乙类; 乙级
drag.	乙组

Class B : 61 phrases in 19 subjects

Automobiles	3
Aviation	2
Biotechnology	3
Business	9
China	2
Computer networks	1
Electric machinery	1
Electronics	3
Exhibitions	1
Explosives and Explosive Ordnance Disposal	2
Finances	2
Hydroelectric power stations	1
Information technology	7
Insurance	1
Nautical	15
Securities	2
Space	1
Technology	2
Telecommunications	3