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来源：https://ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D0%BF%D0%B0%D0%B2%D1%88%D0%B0%D1%8F_%D0%B3%D1%80%D0%B0%D0%BC%D0%BE%D1%82%D0%B0_(%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC)