operculum的用法和样例：

词汇搭配

valve of operculum盖瓣(介壳虫)...
anal operculum肛盖
ovum operculum卵盖
genital operculum生殖厣

经典引文

The..'grandfather clock' pediment with its round operculum.
出自：Time

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2-cyclopropyl-2-propanol