讲座信息包含：讲座标题、发布时间、发布人、讲师、讲座类别、讲座对象、地址、日期、开始时间、结束时间、人数限制、摘要。
Lecture information includes: lecture title, release time, publisher, lecturer, seminar class, lectures object, address, date, start time, end time, the number of constraints, Abstract.
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