男女有别

Explanation: Be different between men and women means 　　Usage: The main predicate; as object; containing derogatory 　　Source: Han Dai Holy "Book of Rites faint justice": "and so into the treat men and women, written for the couple of righteousness. Men and women are different, then couples to justice." 　　Examples: You and I meet by chance, Moreover ~, you have nothing to do with me, and I control you will not catch. ★ Qing Wen Kang, "Hero and Heroine" The Fifth