 |
| |||
| air pocket | |||
| 空穴、空隙: 4 phrases in 4 subjects |
| Desert science | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 1 |
|
| |||
| air pocket | |||
| 空穴、空隙: 4 phrases in 4 subjects |
| Desert science | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 1 |