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| biotic ecosystem | |||
| 生物生态 系统: 26 phrases in 9 subjects |
| Agriculture | 1 |
| Biotechnology | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Technology | 12 |
| Textile industry | 1 |
| United Nations | 5 |
| Water resources | 2 |
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