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: 44 phrases in 18 subjects

Architecture	3
Automobiles	7
Aviation	2
Bridge construction	3
Chemistry	1
Commerce	2
Economics	1
Electronics	2
Hydroelectric power stations	1
Management	1
Metallurgy	2
Plastics	1
Public security	1
Shipbuilding	1
Skydiving	1
Space	1
Technology	11
Telecommunications	3