 |
| |||
| fold up | |||
| |||
| cave | |||
| |||
| sink | |||
| 塌 下: 14 phrases in 9 subjects |
| Business | 1 |
| Drilling | 1 |
| Engineering geology | 1 |
| General | 5 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 1 |
|
| |||
| fold up | |||
| |||
| cave | |||
| |||
| sink | |||
| 塌 下: 14 phrases in 9 subjects |
| Business | 1 |
| Drilling | 1 |
| Engineering geology | 1 |
| General | 5 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 1 |