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| 沙片 (流沙堆积成实际上的薄层，形成片状的风积物或低矮的沙堆和沙丘，无滑落面，却有边界。沙片包括沙带 (sand streak) 和沙条 (sand strip)。世界最大的沙片处于埃及、苏丹和利比亚三国边境地区，面积达10万km²) | |||
| 砂席; 席状砂 | |||
| 小砂原; 薄砂层; 小砂层 | |||
| 沙片 | |||
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sand sheet : 13 phrases in 4 subjects |
| Desert science | 4 |
| Ecology | 2 |
| Oil / petroleum | 3 |
| Technology | 4 |
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