n.难解；深奥
The digital library has characteristics of activation of information documents, logicality in the structure and management, duplexity of information transmission mode, high abstrusity in language. 数字图书馆具有文献信息载体活化、馆藏结构和管理逻辑化、信息传递模式全双工化、语言高度抽象化等特征。
