By age 16 he was playing professionally with bands in Greenwich Village.

到16岁时，他已在与格林尼治村的各乐队进行职业演出了。

《柯林斯英汉双解大词典》

By age 15, he had become an apprentice to Sylvain Bailly, a well-known dessert chef with a successful bakery in one of Paris' most fashionable neighborhoods.

从15岁开始，他就成为了西尔文·贝利的学徒。西尔文·贝利是一位著名的甜点师，在巴黎最时尚的街区之一经营着一家成功的面包店。

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By age 15, he had become an apprentice to Sylvain Bailly, a well-known dessert chef with a successful bakery in one of Paris's most fashionable neighborhoods.

从15岁开始，他就成为了西尔文·贝利的学徒。西尔文贝利是一位著名的甜点厨师，在巴黎最时尚的街区之一有一家成功的面包店。

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In fact,by age eighty-five, people are happier with their life than when they are eighteen years old.

VOA: special.2010.08.03

If you do have it, the disease will always have onset by age 40, 50 or what have you.

如果你有的话，这个病就会从40岁，50岁之类的年纪0,开始发作。

耶鲁公开课 - 死亡课程节选

Be a billionaire by age twenty-seven and then retire and...

在27岁的时候能够成为亿万富翁，然后退休……

我的梦想是百万富翁 - SpeakingMax英语口语达人

They have to be started before the beneficiary turns 18 and used up by age 30.

FORBES: Paying for College: Coverdell Accounts

The research also evaluated this knowledge based on subgroups defined by age, gender, and race.

FORBES: Educating a Nation of Financial Illiterates

Lawrence Fuller has also chosen to retire a year earlier than required by age limits.

FORBES: Magazine Article