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| 分洪渠; 排水渠 | |||
| 辅道 (指航道); 分洪渠 (道); 分洪道; 放水渠 (道) | |||
| relief channel: 10 phrases in 5 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 3 |
| Technology | 4 |
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