 |
| 牢固的: 42 phrases in 15 subjects |
| Architecture | 3 |
| Automobiles | 2 |
| Business | 1 |
| China | 1 |
| Commerce | 2 |
| Drilling | 1 |
| Economy | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 10 |
| Hydroelectric power stations | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Shipbuilding | 2 |
| Technology | 7 |
| Telecommunications | 3 |