noun 下载 🔗分享 花冠 An outermost-but-one whorl of a flower, composed of petals, when it is not the same in appearance as the outermost whorl (the calyx); it usually comprises the petal, which may be fused. Examples : "The rose's vibrant red corolla of delicate petals surrounded its inner reproductive parts, contrasting sharply with the green sepals of its calyx. " 玫瑰鲜艳的红色花冠由精致的花瓣组成,环绕着它内部的生殖器官,与绿色萼片的萼片形成了鲜明的对比。 plant biology part nature organism 与AI对话词汇游戏阅读练习