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| 海胆亚目; 松果菊属; 紫薇花属菊花 | |||
| 紫锥菊属; 紫松果菊属 (菊科，该属有9个种，主要分布于北美干草原地区) | |||
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Echinacea : 14 phrases in 4 subjects |
| Biology | 2 |
| Desert science | 1 |
| Latin | 9 |
| Pharmacology | 2 |
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