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词汇 invertebrate
词源

invertebrate adj.

"having naturally no backbone," 1819, from Latin in- "not" (see in- (1)) + vertebratus (Pliny), from vertebra "joint or articulation of the body, joint of the spine" (see vertebra). As a noun, "an invertebrate animal," 1826.

updated on January 04, 2016

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更新时间:2025/5/2 0:55:43