一种毛颚动物门中的，细小的海生虫，有细长几乎透明的身体，嘴的两侧有镰刀形的毛须。

Any of various small, slender Marine worms of the phylum Chaetognatha having a narrow, almost transparent body and sickle-shaped bristles on each side of the mouth.

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一种毛颚动物门中的，细小的海生虫，有细长几乎透明的身体，嘴的两侧有镰刀形的毛须。

Any of various small, slender Marine worms of the phylum Chaetognatha having a narrow, almost transparent body and sickle-shaped bristles on each side of the mouth.

youdao