 |
| 弃土: 90 phrases in 14 subjects |
| Agriculture | 2 |
| Bridge construction | 7 |
| Desert science | 1 |
| Earth sciences | 2 |
| Ecology | 2 |
| Electronics | 5 |
| Engineering geology | 10 |
| Environment | 1 |
| General | 2 |
| Hydraulics | 2 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Rail transport | 2 |
| Technology | 50 |