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| land conservation; protection of land | |||
| land conservation The care, preservation and re-use of solid areas of the earth's surface, especially soil regions valued as a natural resource or utilized as an agricultural resource (地球表面坚固地区的管理、保护和重利用，特别是作为天然资源和农业资源的土壤地区。) | |||
| soil protection | |||
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| land conservation; land preservation | |||
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土地 保护 : 19 phrases in 4 subjects |
| Earth sciences | 8 |
| Ecology | 3 |
| Name of organization | 2 |
| Technology | 6 |
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