noun 下载 🔗分享 鞘翅, 翅鞘 A sheath or outer covering, especially around the spinal cord or over the hindwings of certain insects. Examples : "The beetle's hard, shiny elytron protected its delicate wings underneath. " 这只甲虫坚硬而闪亮的翅鞘保护着它下面脆弱的翅膀。 anatomy insect biology part organism 与AI对话词汇游戏阅读练习