nereis
沙蠶屬動物
Ne·re·is prop. n.; pl. Nereides
1. Class. Myth. A Nereid. See Nereid.
2. Zool. A genus, including numerous species, of marine chaetopod annelids, having a well-formed head, with two pairs of eyes, antennae, four pairs of tentacles, and a protrusile pharynx, armed with a pair of hooked jaws.
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