单词	sclerogen
释义	sclerogen noun scle·​ro·​gen ˈsklirəjə̇n, -ler-, -ˌjen plural -s : the lignified and mineralized material of the walls of a brachysclereid Word History Etymology scler- + -gen
随便看	narthecal narthecia Narthecium nartheciums narthex narthexes nartje nartjie nartjies Naruhito Narva Narvik Narváez narwals narwhal narwhale narwhales narwhals nary nary a nary an nas NAS nas de gor nas national park reserve

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