男大当婚女大当嫁

男大当婚女大当嫁

Literally means:

upon growing up, a man should take a wife and a woman should take a husband

Actually means:

grown-up men and women are to marry

A grown-up man should marry, so should a grown-up woman. It means marriageable male and female adults are amenable to matrimony. It is generally used when talking about matrimony or to remind or urge marriageable yet unmarried persons to get married.

男子大了应该娶妻子，女子大了应该嫁人。指成年男女到了适当的岁数就可以或应该结婚。一般用在议论婚事的场合，或提醒、催促年龄适当的未婚青年。