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| blackland | |||
| black earth (指伏尔加河与库马河之间的地区。这里冬季风大，解冻时融雪、与雪盖地区相对而言，呈黑色背景，故名黑土。这一地区为冬牧场) | |||
| 黑土地: 7 phrases in 4 subjects |
| Agriculture | 3 |
| Desert science | 2 |
| Ecology | 1 |
| Technology | 1 |
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