For about twenty years.

大约二十年。

youdao

My father has worked there for about twenty years.

我爸爸在那里工作约二十年了。

youdao

After living with his uncle for about twenty years, Jacob returned home with his large family and great wealth.

雅各和母舅一起居住约二十年，之后便带著他庞大的家人和财富回家。

youdao

Homestake operated as a gold mine for one hundred twenty-five years before closing about nine years ago.

VOA: special.2009.07.21

Another proposal would add two years to the full retirement age for Social Security -- raising it to sixty-nine by about twenty seventy-five.

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