noun🔗Share鳃盖，厣 A covering flap in animals, such as a gill cover."The fish opened and closed its operculum, allowing it to breathe underwater. "这条鱼一张一合地扇动着鳃盖，让它能够在水下呼吸。(Zhè tiáo yú yī zhāng yī hé de shāndòngzhe sāigài, ràng tā nénggòu zài shuǐxià hūxī.)organismanimalbiologyanatomyfishpartChat with AIVocabulary GamePractice Reading
noun🔗Share盖，蒴帽，口盖 The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds."The operculum on the moss capsule popped open, releasing a cloud of tiny spores into the air. "苔藓蒴果上的蒴帽突然弹开，释放出一团细小的孢子到空气中。plantpartbiologyseedChat with AIVocabulary GamePractice Reading
noun🔗Share牙龈瓣，龈瓣. A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth."The dentist carefully removed the operculum, allowing the wisdom tooth to finally emerge. "牙医小心地切除了覆盖在智齿上的牙龈瓣，使智齿最终得以萌出。medicineanatomybodypartChat with AIVocabulary GamePractice Reading
noun🔗Share盖， operculum, 鳃盖 A structure which serves as a cover or lid."The snail closed its operculum, sealing itself safely inside its shell. "蜗牛闭合了它的厣 (yǎn)，安全地把自己封在了壳里。partbiologyanatomystructureorganismChat with AIVocabulary GamePractice Reading
