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动水头 : 57 phrases in 14 subjects |
Architecture | 2 |
Automobiles | 2 |
Bridge construction | 2 |
Drilling | 3 |
Electronics | 2 |
Exhibitions | 1 |
Gymnastics | 1 |
Hydraulics | 1 |
Hydroelectric power stations | 4 |
Oil / petroleum | 6 |
Space | 1 |
Statistics | 1 |
Swimming | 1 |
Technology | 30 |