 |
| 群聚: 91 phrases in 25 subjects |
| Acridology | 7 |
| Agriculture | 3 |
| Animal husbandry | 3 |
| Aviation | 2 |
| Biology | 2 |
| Business | 6 |
| Chemistry | 2 |
| Construction | 1 |
| Dermatology | 1 |
| Desert science | 8 |
| Ecology | 2 |
| Economy | 1 |
| Electronics | 1 |
| General | 17 |
| Genetics | 1 |
| Information technology | 1 |
| Latin | 1 |
| Metallurgy | 1 |
| Pest control | 1 |
| Reproductive biology | 2 |
| Space | 7 |
| Sports | 1 |
| Technology | 14 |
| Telecommunications | 3 |
| Water resources | 3 |