Smith is fifty years old.

史密斯50岁了。

youdao

My mother is fifty years old.

我母亲已经五十岁了。

youdao

My father is an engineer, nearly fifty years old.

爸爸是一位工程师，年龄将近50岁。

youdao

One of the biggest changes is that the task force now advises against mammograms for most women under fifty years old.

VOA: special.2009.11.18

He didn't even begin to fulfill what we can think of as his epic promise until he was nearly fifty years old, until he had actually lost the use of his eyes, until he could no longer read, and until he could no longer use a pen to write.

但真正开始实行他要写史诗的愿望的时候,弥尔顿已经将近50岁了，那是他已经几乎,丧失了视力，不能再读书，不能执笔写作。

耶鲁公开课 - 弥尔顿课程节选

This week on our program, we tell about a musical play that is fifty years old this month.

VOA: special.2010.05.24

Ernst is fifty years old, a native German who received his medical degree at the University of Heidelberg before training in pulmonary and critical-care medicine in the United States.

NEWYORKER: Big Med

The processing plant is over fifty years old.

FORBES: Firefighters are Extinguishing a Fatal Blaze at an Oil Refinery in Venezuela, Long-term Problems Will Be Harder to Fix

She was fifty-seven years old and had joined the clinic after suffering a third heart attack.

NEWYORKER: The Hot Spotters