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同义词: bursiform pouch-shaped pouchlike
以上来源于: WordNet
saccate , cystoid
词根: sac
sac [生物] 囊;液囊
Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.
放射状对称的动物,囊状身体覆有刺样结构的触须,只有一个开口;它们以珊瑚和水母的形式出现。
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