例如，到华沙参加会议的人当中有多少人去参观了壮观的大学图书馆？
How many people attending conferences in Warsaw, for example, get to visit the spectacular university library (pictured, above)?
例如，到华沙参加会议的人当中有多少人去参观了壮观的大学图书馆？
How many people attending conferences in Warsaw, for example, get to visit the spectacular university library (pictured, above)?
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