noun 下载 🔗分享 书包,背包. A bag or case with one or two shoulder straps, especially used to carry books etc. Examples : "The student carried her heavy textbooks in a worn leather satchel. " 那个学生用一个旧旧的皮书包装着沉重的课本。 item wear education 与AI对话词汇游戏阅读练习