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低 地 : 240 phrases in 29 subjects |
Astronautics | 1 |
Automobiles | 1 |
Aviation | 5 |
Business | 3 |
Corporate governance | 1 |
Ecology | 2 |
Education | 2 |
Electronics | 3 |
Figurative | 1 |
Fish farming pisciculture | 1 |
General | 142 |
Geology | 13 |
Hydrology | 1 |
Mammals | 1 |
Medical | 2 |
Military | 4 |
Mining | 1 |
Nautical | 2 |
Oil / petroleum | 1 |
Oil processing plants | 1 |
Oilfields | 2 |
Ornithology | 1 |
Pest control | 1 |
Road works | 1 |
Seismology | 2 |
Technology | 41 |
United Nations | 1 |
Water resources | 2 |
Zoology | 1 |