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21. | free ground water |
| 自由地下水 |
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22. | ground water solutio |
| 地下水溶蚀 |
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23. | groundwater capture |
| 地下水袭夺 |
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24. | ground water basin |
| 地下水盆地 |
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25. | groundwater development |
| 地下水开发 |
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26. | groundwater origin |
| 地下水成因 |
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27. | groundwater monitoring |
| 地下水监测 |
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28. | mining of groundwater |
| 地下水开采 |
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29. | groundwater mound |
| 地下水土丘 |
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30. | ground water drainage |
| 地下水排水 |
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