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航空信 hángkōngxìn
gen. aerial mail; aerial post; airpost
busin. via airmail; air mail letter
econ. airletter
interntl.trade. air letter
tech. airmail
telecom. air mail
航空信: 238 phrases in 16 subjects
Air defense9
Architecture1
Aviation124
Business6
Earth sciences1
Economy1
Electronics23
General17
Information technology2
International trade3
Shipbuilding1
Space22
Technology15
Telecommunications2
Textile industry1
United States10