1. 同意年龄，承诺年龄（可以与人发生性关系的法定年龄）
The age of consent is the age at which a person can legally agree to having a sexual relationship.

1. the minimum age for marrying without parental consent or the minimum age for consensual sexual relations
intercourse at an earlier age can result in a charge of assault or statutory rape
the age differs in different states of the Union