of age

基本解釋

Half the population in India is under 25 years of age, whereas in many developed markets, the average age is about 40.
印度有一半的人口年齡不到25歲，而在許多發(fā)達(dá)市場(chǎng)，人口的平均年齡大約為40歲。
The entire carcass of cattle not inspected and passed for human consumption is also prohibited, unless the cattle are less than 30 months of age, or the brains and spinal cords have been removed.
那些沒有被檢查過的和被人類習(xí)慣性認(rèn)為可以消費(fèi)的完整的牛的畜體也被禁止出售了，除非那頭牛小于30月齡或其腦部和脊髓已經(jīng)被切除。

In nineteen eighty-three, he began to study more than twenty-two thousand healthy male doctors over forty years of age.
Around seven years of age going up through puberty, the ability to learn language starts to go away.
大約七歲的時(shí)候開始,一直到青春期,學(xué)習(xí)語言的能力逐漸減弱
耶魯公開課 - 心理學(xué)導(dǎo)論課程節(jié)選
Yes, but in general, firing somebody simply because of age, is not only strange in America but illegal.
但是總的來說，只因?yàn)槟挲g就辭退員工在美國(guó)不常見也不合法。
退休很神奇 - SpeakingMax英語口語達(dá)人

Regardless of age, though, there are certain transgenerational reasons men and women decide to dedicate time to volunteering.
FORBES: Retirement With A Purpose
In many ways, both the 13-year-old festival and the straitlaced Singapore government have come of age.
ECONOMIST: A little bit on the screen