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词根词缀:icosa-, icos-, icosi-, eicosa-

【来源及含义】Greek: the number twenty; used as a prefix

【同源单词】icosacolic, icosahedron, icosandrous, icosanoid, icosasemic, icosian

词根词缀:semeio-, sema-, semato-, semat-, semasio-, semio-, -semic, -semia

【来源及含义】Greek: signal, signals; sign, signs; mark, marks; symbol, symbols

【同源单词】allosematic, aposematic, asemantic, asemasia, asemia, asemic