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| 河区; 河流流程; 河流的上下游; 河段; 河的上下游; 河道 | |||
| 河流直段 | |||
| reach of river: 12 phrases in 4 subjects |
| Agriculture | 1 |
| Bridge construction | 2 |
| Hydroelectric power stations | 2 |
| Technology | 7 |
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