| 单词 | 水珊瑚虫 |
| 释义 | 〔hydra〕Any of several small freshwater polyps of the genusHydra and related genera, having a naked cylindrical body and an oral opening surrounded by tentacles. 水螅：任何几种水螅 属或相近属的小型的、淡水珊瑚虫，身体呈圆柱形、表面无鳞甲，口部周围有触须 〔hydrocoral〕Any of various colonial marine hydrozoans of the order Hydrocorallinae, having a limestone skeleton and thus resembling the true corals.水珊瑚虫：属于水生珊瑚虫类的多种集群海生水螅虫的任何一种，其有石灰石结构，类似真正的珊瑚 |
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