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+ 脊柱 脊柱 [ji3 zhu4] /spinal column/

+ 脊索 脊索 [ji3 suo3] /notochord (internal skeletal rod in primitive fish)/

+ 文昌魚 文昌鱼 [wen2 chang1 yu2] /lancelet (Branchiostoma lanceolatum), a primitive fish/

+ 無頜 无颌 [wu2 he2] /jawless (primitive fish)/

+ 有頜 有颌 [you3 he2] /jawed (fish)/

+ 頭索類 头索类 [tou2 suo3 lei4] /lancelet (Branchiostoma)/

+ 合作者 合作者 [he2 zuo4 zhe3] /co-worker/collaborator/also collaborator with the enemy/

+ 脊背 脊背 [ji3 bei4] /back/

+ 脊肋 脊肋 [ji3 lei4] /ribcage/

+ 脊樑骨 脊梁骨 [ji3 liang5 gu3] /backbone/

+ 脊線 脊线 [ji3 xian4] /ridge line/

+ 峰線 峰线 [feng1 xian4] /mountain ridge line/

+ 神經索 神经索 [shen2 jing1 suo3] /spinal chord/

+ 鰓裂 鳃裂 [sai1 lie4] /gill slit (in fish)/

+ 流線型 流线型 [liu2 xian4 xing2] /streamline/

+ 爬行類 爬行类 [pa2 xing2 lei4] /reptiles/also written 爬行動物|爬行动物/

+ 哺乳類 哺乳类 [bu3 ru3 lei4] /mammals/also written 哺乳動物 哺乳动物/

+ 西薩摩亞 西萨摩亚 [Xi1 Sa4 mo2 ya4] /Western Samoa/

+ 忠義 忠义 [zhong1 yi4] /loyal and righteous/fealty/loyalty/

+ 忠言 忠言 [zhong1 yan2] /loyal advice/sincere advice/