adjective 下载 🔗分享 单宁的,鞣酸的 Pertaining to, containing, or obtained from tannin. Examples : "The leather used in the new school backpacks is quite tannic, giving it a strong, durable texture. " 新款学生书包使用的皮革单宁含量较高,因此质地坚固耐用。 substance material chemistry 与AI对话词汇游戏阅读练习