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| very fine sand | |||
| very-fine sand | |||
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极细砂 : 10 phrases in 7 subjects |
| Desert science | 1 |
| Earth sciences | 1 |
| General | 1 |
| Geology | 1 |
| Oil / petroleum | 1 |
| Soil science | 2 |
| Technology | 3 |
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