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Meaning of 圆口纲脊椎动物

Lookup via: Pinyin | Radicals
圆 yuán 口 kǒu 纲 gāng 脊 jǐ 椎 zhuī 动 dòng 物 wù (Trad.: 圓口綱脊椎動物)
cyclostome (marine biology)