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| 拉 头足类箭石属 | |||
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| 箭石 | |||
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| 箭石属一种已灭绝的软体动物或其化石 | |||
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Belemnites : 12 phrases in 4 subjects |
| Earth sciences | 1 |
| Geology | 3 |
| Oil / petroleum | 1 |
| Technology | 7 |
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