| 释义 |
unsegmented  adjective chiefly ZoologyNot divided into segments.The developmental mode of polychaetes is characterized by the production at hatching of an initially unsegmented trochophore larva....- To gain a more accurate understanding of the segmented or unsegmented nature of these four taxa, two types of data must be gathered.
- Flatworms are unsegmented, bilaterally symmetrical worms that lack a coelom but that do have three germ layers.
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