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| 1. | They demand more services such as sewage and drainage. |
| 他们要求更多的公共设施，如污水处理和下水道系统等等。 |
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| 2. | drainage system |
| "排水系统,见 storm water drainage system" |
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| 3. | American and Chinese engineers installed drainage culverts. |
| 美国和中国的工程兵安装下水道。 |
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| 4. | Ventilation of a sewer |
| 下水道通风 |
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| 5. | Sewerage Management Public Corporation |
| 下水道公社 |
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| 6. | There is a greater density of household goods; they demand more services such as sewage and drainage. |
| 家用物品更加密集;他们需要诸如污水处理和下水道之类的更多设施。 |
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| 7. | storm water drainage |
| 下水道 |
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| 8. | Sewage Management Division |
| 下水道课 |
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| 9. | Road construction and drainage are very important factors in determining the health of rivers. |
| 道路的建设与下水道是决定河水正常的重要因素； |
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| 10. | egg-shaped sewer |
| 卵形下水道 |
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