这个词是什么意思？
A subclass of cartilaginous fish comprising the SHARKS; rays; skates (SKATES (FISH);), and sawfish. Elasmobranchs are typically predaceous, relying more on smell (the olfactory capsules are relatively large) than sight (the eyes are relatively small) for obtaining their food.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018940 · MeSH 2026。
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