 |
| 不重要的: 41 phrases in 16 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 1 |
| Bridge construction | 2 |
| Business | 1 |
| China | 1 |
| Commerce | 2 |
| Cryptography | 1 |
| Economy | 6 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 19 |
| Genetics | 1 |
| Sports | 1 |
| Technology | 1 |
| Telecommunications | 1 |