noun 下载 🔗分享 蜡膜 A waxy protuberance at the base of the upper beak in certain birds. Examples : "The budgerigar's ceres was a vibrant blue, indicating it was a male ready to breed. " 这只虎皮鹦鹉的蜡膜是鲜艳的蓝色,表明它是一只准备好繁殖的雄性。 animal bird anatomy part biology 与AI对话词汇游戏阅读练习