They were both only 20 years of age.

他们两人都只有20岁。

《牛津词典》

The jacket was showing signs of age.

这件夹克已露出破旧的痕迹。

《牛津词典》

Salary is a function of age and experience.

工资视乎年龄和经验而定。

《牛津词典》

In nineteen eighty-three, he began to study more than twenty-two thousand healthy male doctors over forty years of age.

VOA: special.2009.10.20

Around seven years of age going up through puberty, the ability to learn language starts to go away.

大约七岁的时候开始,一直到青春期,学习语言的能力逐渐减弱

耶鲁公开课 - 心理学导论课程节选

Yes, but in general, firing somebody simply because of age, is not only strange in America but illegal.

但是总的来说，只因为年龄就辞退员工在美国不常见也不合法。

退休很神奇 - SpeakingMax英语口语达人

Regardless of age, though, there are certain transgenerational reasons men and women decide to dedicate time to volunteering.

FORBES: Retirement With A Purpose

Candidates also must be under 41 years of age at the time their paper was accepted for publication.

UNESCO: Apply for UNESCO Prizes

And it's timely -- we're seeing an epidemic of age-related macular degeneration with our aging population.

CNN: Smoking quadruples risk for vision-stealing eye disease