河底 : 229 phrases in 16 subjects |
Agriculture | 2 |
Architecture | 4 |
Bridge construction | 4 |
Desert science | 5 |
Earth sciences | 1 |
Ecology | 1 |
Engineering geology | 9 |
Finances | 1 |
General | 7 |
Hydroelectric power stations | 12 |
Latin | 1 |
Metallurgy | 1 |
Oil / petroleum | 10 |
Soil science | 2 |
Technology | 166 |
Water resources | 3 |