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行家 hángjiā
gen.	artiste; connoisseur (in,of); mavin; maven; out-and-outer
busin.	out and outer
econ.	sharp
IT	power user
securit.	professional
space	mavin (美俚)
tech.	connoisseur; expert
textile	hand
某行业行家 hángjiā
busin.	past master

行家: 456 phrases in 55 subjects

Advertising	3
Air defense	1
Animal husbandry	17
Artificial intelligence	1
Automobiles	2
Aviation	16
British usage, not spelling	1
Business	13
China	28
Commerce	23
Company name	2
Computer networks	1
Corporate governance	10
Dermatology	2
Desert science	2
Diplomacy	1
Earth sciences	16
Economy	44
Electronics	5
Equestrian sports	1
Exhibitions	1
Explosives and Explosive Ordnance Disposal	3
Finances	42
French	1
Furniture	2
General	20
Genetics	3
Horticulture	1
Information technology	1
International Monetary Fund	6
International trade	7
Latin	1
Life sciences	2
Management	1
Marketing	1
Medical	1
Multimedia	1
Name of organization	47
Pest control	1
Politics	1
Project management	7
Psychology	1
Reproductive biology	9
Securities	28
Security systems	1
Skydiving	3
Space	6
Sports	2
Technology	17
Telecommunications	3
Textile industry	8
United Nations	32
United States	4
Veterinary medicine	1
Water resources	2