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  Worm

Sigma KEE - Worm

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蠕虫
这是一种瘦、长的软体 Invertebrates。
Relationships      
Parents 无脊椎动物 An Animal which has no spinal column.
Children LeechLeeches are segmented parasitic or predatory Worms that comprise the subclass Hirudinea within the phylum Annelida. The best-known species, such as the medicinal leech, Hirudo medicinalis, are hematophagous, attaching themselves to a host with a sucker and feeding on Blood, having first secreted the peptide hirudin to prevent the blood from Clotting. [from Wikipedia]


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