细筛 : 83 phrases in 15 subjects |
Agriculture | 4 |
Animal husbandry | 4 |
Architecture | 1 |
Automobiles | 1 |
Aviation | 1 |
Drilling | 2 |
Ecology | 2 |
Electronics | 1 |
Engineering geology | 4 |
General | 8 |
Genetics | 3 |
Hydroelectric power stations | 1 |
Metallurgy | 7 |
Oil / petroleum | 3 |
Technology | 41 |