He was twenty-nine years old.

VOA: special.2009.11.22

Milton's nearly twenty-nine years old when he writes Lycidas.

写《利西达斯》的时候弥尔顿将近29岁了。

耶鲁公开课 - 弥尔顿课程节选

Freud was eighty-three years old when he died of cancer in London on September twenty-third, nineteen thirty-nine.

VOA: special.2010.04.13

Fifty-six percent of the injuries were to people twenty to thirty-nine years old.

VOA: special.2009.12.09

He was seventeen years old when his mother died, in nineteen twenty-nine.

VOA: special.2010.06.13