I will be nineteen years old tomorrow.

明天我将十九岁了。

youdao

You were nineteen years old last year.

去年你十九岁。

youdao

She was nineteen years old on her last birthday.

她过最后一个生日时19岁。

youdao

He was nineteen years old, the youngest All-Star in NBA history.

VOA: special.2009.11.20

It's late for some personal reasons as well. Milton had been, as you know, anticipating writing this poem since he was at least nineteen years old.

也有一些个人原因，你们知道，弥尔顿至少在19岁的时候就想要写这样一首诗了。

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

Her daughter, Daphne, was born in 1969 when Ruth was nineteen years old, the second or third of her children their birth order was never made clear to me by anyone in the family.

NPR: One Boy's Heroism in the Face of AIDS

No other princess was so honoured until 1727, when the Hanoverian King George II of England styled his daughter Anne who also became a princess of Orange and lived until 1759 Princess Royal, when she was nineteen years old.

NPR: Excerpt: Princesses