flow from

: 35 phrases in 19 subjects

Artificial intelligence	1
Aviation	1
Bridge construction	1
China	1
Drilling	1
Economics	1
Explosives and Explosive Ordnance Disposal	1
Finances	8
General	3
Geophysics	1
Hydroelectric power stations	1
Law	1
Metallurgy	3
Public security	1
Refrigeration	1
Scientific	1
Securities	4
Space	1
Technology	3