The history of western civilization aside, humans are naturally polygamous.
历史上，除了西方文明，人类自然的实行着多配偶的社会制度。
Professor Smith is going to give us a lecture on the history of Western civilization.
史密斯教授将给我们做有关西方文明史的讲座。
Professor Smith is going to give us a lecture on the history of Western civilization.
史密斯教授将给我们做有关西方文明史的讲座。
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