 |
| |||
| arctic | |||
| polar | |||
| 极地 的: 43 phrases in 15 subjects |
| Agriculture | 1 |
| Architecture | 2 |
| Automobiles | 1 |
| Aviation | 3 |
| China | 2 |
| Drilling | 1 |
| Economy | 4 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Fishery fishing industry | 1 |
| General | 17 |
| Geology | 1 |
| Hydroelectric power stations | 1 |
| Space | 1 |
| Technology | 6 |