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| 平均水位 (level) | |||
| average water: 54 phrases in 10 subjects |
| Architecture | 1 |
| Bridge construction | 6 |
| Desert science | 3 |
| Ecology | 2 |
| Electronics | 2 |
| Engineering geology | 2 |
| Hydroelectric power stations | 2 |
| Oil / petroleum | 2 |
| Rail transport | 1 |
| Technology | 33 |
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