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按需要
avia.	as required
busin.	in demand

按需要: 23 phrases in 12 subjects

Architecture	1
Automobiles	2
Aviation	3
Business	5
Earth sciences	1
Economy	3
Explosives and Explosive Ordnance Disposal	1
General	2
International Monetary Fund	1
Project management	1
Shipbuilding	2
Textile industry	1