这个词是什么意思？
Any reptile including tortoises, fresh water, and marine species of the order Testudines with a body encased in a bony or cartilaginous shell consisting of a top (carapace) and a bottom (plastron) derived from the ribs.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014426 · MeSH 2026。
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