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| 土地生产率 | |||
| 土地生产率【土】 | |||
| 土地生产力 | |||
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land productivity : 10 phrases in 5 subjects |
| Agriculture | 1 |
| Desert science | 1 |
| Earth sciences | 3 |
| Ecology | 4 |
| Economy | 1 |
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