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| 泄水沟; 排水道 | |||
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outlet drain : 20 phrases in 9 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Chemistry | 4 |
| Ecology | 1 |
| Hydraulics | 1 |
| Metallurgy | 2 |
| Plastics | 1 |
| Technology | 8 |
| Water resources | 1 |
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