Life in the Universe, public lecture.
——《宇宙中的生命》，公开演讲。
The Beginning of Time, public lecture.
——《时间之始》，公开演讲。
For no money, I would give the lecture to the public.
就算不给钱，我也愿意为大家做讲座。
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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