Many of his most famous books were written before he was thirty years old.

VOA: special.2010.04.09

Meanwhile, his youth was going away and now this imaginary student is now thirty-three years old never had time to marry or start a normal life.

与此同时，他的青春年华也已经逝去了,现在这位设想出来的同学已经33岁了,还没有结婚也没有开始正常人的生活。

耶鲁公开课 - 金融市场课程节选

Hubble was thirty years old.

VOA: special.2009.04.29

Rosalyn Schanzer shows readers the young man who was only twenty-two years old when he left Plymouth,England in eighteen thirty-one.

VOA: special.2009.02.27

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

Radiocarbon test results from two laboratories show that the flutes are over thirty-five thousand years old.

VOA: special.2009.08.18

About thirty years later, the old mansion was connected to a modern building that was added.

VOA: special.2009.09.21

He was thirty-six years old when he published his first book of poetry in eighteen fifty-five.

VOA: special.2009.04.12

Anna Carpenter is thirty-three years old and busy with work, a husband and soon a child.

VOA: special.2010.12.27

He was thirty-eight years old. The Baseball Writers Association of America held a special election.

VOA: special.2010.04.11

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

VOA: special.2009.12.09

As he grew older, he always claimed to be thirty-nine years old.

VOA: special.2009.10.11

Tests show the instrument, a flute,is at least thirty-five thousand years old.

VOA: special.2009.08.18

He was thirty-one years old; she was nineteen.

VOA: special.2010.03.08

He was just thirty-six years old.

VOA: special.2010.07.01

He was only thirty-nine years old.

VOA: special.2009.02.15

She is only thirty-two years old.

VOA: special.2010.04.24

She was thirty-six years old.

VOA: special.2009.12.06