According this latest research, teenagers first had sex at the age of 14.9 years, regardless of whether they attended sex abstinence classes.
According this latest research, teenagers first had sex at the age of 14.9 years, regardless of whether they attended sex abstinence classes.
依据最新调查，青少年第一次性交的年龄为14.9岁，无论他们是否参加性节制教育课程。