N any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals 腔肠动物门动物
ADJ (loosely) any invertebrate of the phyla Cnidaria or Ctenophora 腔肠动物的
The stings of coelenterates are quite sensitive towards outside stimulation.
腔肠动物的刺针对于外界的刺激很敏感。
Coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes.
以世代交替为特色的腔肠动物；通常群居的水螅阶段先于水母阶段；水螅和水母。
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