annelida
環節動物
An·nel·i·da /əˈnɛlədə, æ-/ 名詞 複數
An·nel·i·da n. pl. Zool. A division of the Articulata, having the body formed of numerous rings or annular segments, and without jointed legs. The principal subdivisions are the Chætopoda, including the Oligochæta or earthworms and Polychæta or marine worms; and the Hirudinea or leeches. See Chætopoda.
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An·nu·la·ta n. pl. Zool. A class of articulate animals, nearly equivalent to Annelida, including the marine annelids, earthworms, Gephyrea, Gymnotoma, leeches, etc. See Annelida.
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Annelida
n : segmented worms: earthworms; lugworms; leeches [syn: phylum
Annelida]