... in one's late teens 在十几岁后期[的] in one's early teens在十几岁前期[的] in [out of] one's teens 在 [已过] 十几岁的年龄 ...
双语例句
1
In fact, according to a recent scientific study, overall levels of happiness decline from one'steens until one's 40s and then pick up again until they peak in one's early 70s.