Elementary and secondary education, which forms public education, is free and compulsory.
初等和中等教育属公立教育，是免费和义务的。
The public library lecture is one of the important forms of public domain.
公共图书馆讲座是公共领域（公共空间）的重要表现形式。
The public library lecture is one of the important forms of public domain.
公共图书馆讲座是公共领域（公共空间）的重要表现形式。
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