 |
| |||
| 沙模式; 沙模型 | |||
| 砂模型 | |||
| sand model: 8 phrases in 4 subjects |
| Agriculture | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 4 |
|
| |||
| 沙模式; 沙模型 | |||
| 砂模型 | |||
| sand model: 8 phrases in 4 subjects |
| Agriculture | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 4 |