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operculum /ˈɒpəɹˌeɪtɪŋ ˈdam/ n

中文：鳃盖

中文 · 鳃盖Español · opérculoFrançais · opercule
Meaning：Thin bony plate of skin covering the gills and having a posterior valvular opening, the hearing organ.
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Perch anatomy Frog life cycle

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