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| biogeochemical cycle | |||
| 生物地球: 71 phrases in 13 subjects |
| Agriculture | 8 |
| Desert science | 7 |
| Earth sciences | 10 |
| Environment | 2 |
| Forestry | 4 |
| General | 3 |
| Genetics | 1 |
| Geology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 9 |
| Russian language | 2 |
| Space | 2 |
| Technology | 21 |
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