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| 松散岩石; 疏松岩; 脆弱岩石松散岩层 | |||
| 疏松岩石; 脆弱岩石 | |||
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| 疏松岩类; 脆弱岩 | |||
| рыхлая порода: 4 phrases in 2 subjects |
| General | 3 |
| Geology | 1 |
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