 |
| 分级的: 172 phrases in 40 subjects |
| Advertising | 2 |
| Agriculture | 3 |
| Animal husbandry | 5 |
| Artificial intelligence | 1 |
| Automobiles | 8 |
| Aviation | 3 |
| Business | 4 |
| Chess | 1 |
| Coal | 1 |
| Corporate governance | 2 |
| Desert science | 1 |
| Earth sciences | 3 |
| Ecology | 2 |
| Economy | 8 |
| Electronics | 5 |
| Engineering geology | 2 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Fish farming pisciculture | 1 |
| General | 19 |
| Geology | 2 |
| Hydroelectric power stations | 9 |
| Information technology | 1 |
| International trade | 1 |
| Management | 2 |
| Mathematics | 2 |
| Metallurgy | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Polymers | 3 |
| Project management | 2 |
| Reproductive biology | 1 |
| Securities | 2 |
| Space | 1 |
| Sports | 3 |
| Technology | 62 |
| Telecommunications | 1 |
| Textile industry | 1 |
| Wind Energy | 1 |
| Winemaking | 1 |