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「情、性」專欄 之 性行為與性愛 https://tdww.org.hk/2020/04/14/%e3%80%8c%e6%83%85%e3%80%81%e6%80%a7%e3%80%8d%e5%b0%88%e6%ac%84-%e4%b9%8b-%e6%80%a7%e8%a1%8c%e7%82%ba%e8%88%87%e6%80%a7%e6%84%9b/