The earliest medieval music did not have any kind of notational system. The tunes were primarily monophonic and transmitted by oral tradition.
中世纪早期并没有多种记谱法体系，音乐作品主要是单声部的，并依靠口头传播。
The notational PHP application probably includes a module that lets system administrators create, edit, and delete users.
注释(notational)PHP应用程序可能包括让系统管理员创建、编辑和删除用户的模块。
The notational PHP application probably includes a module that lets system administrators create, edit, and delete users.
注释(notational)PHP应用程序可能包括让系统管理员创建、编辑和删除用户的模块。
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