| 单词 | radial canal |
| 释义 | radial canalnoun1 : one of the numerous minute canals lined with choanocytes which radiate from the paragastric cavity in some sponges and end just below the surface of the sponge 2 : one of the canals extending through the substance of the umbrella from the gastric cavity to the marginal circular canal in jellyfishes 3 : a tube extending outward along each ambulacral area from the circumoral canal in most echinoderms |
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