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| 単語 / 【 ID 】
意味 / 例文 /同義語/上位語/下位語/派生語 |
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operculum
![]() SimpleWikiWiktionaryGoogle検索CollinsCambridgeLongmanLongman英和Learners 【 25168 】 【意味】 "[名詞] a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted [例] The operculum is a hard flap covering the gills of a fish. [例] The operculum is a hard flap serving as a cover for the gill slits in fishes. [例] It has an operculum that covers the shell. [意味] 蓋, 鰓蓋 ; [上位語] plate ; [同義語群] 01902368-n" |