He is ten years old.

他十岁了。

《牛津词典》

Though ten years old, this book is highly recommended.

尽管已出版10年了，这本书仍备受推崇。

《柯林斯英汉双解大词典》

I started to buy story books when I was ten years old.

我十岁的时候开始买故事书。

youdao

Susan was about ten years old, growing up in the Midwest, when she discovered Nancy Drew.

VOA: special.2009.08.24

Welles heard that obviously, and he quickly came back. But when she died, he stopped taking lessons, before that, he was adept before he was ten years old.

威尔斯当然听到了，所以他,很快回来了，但在,他母亲去世之后，他就不再上课了，在这之前，在他十岁的时候他就对乐器很熟练了。

麻省理工公开课 - 电影哲学课程节选

I did have a friend who was beat up by about twelve or thirteen kids who were all between ten and eleven years old,

我有个朋友曾被十二三个孩子殴打，都在十岁和十一岁之间。

大城市是否危险？ - SpeakingMax英语口语达人

It was sultry in the basement, where the air-conditioner was at least ten years old, inefficient, and whined loudly.

NEWYORKER: The House Behind a Weeping Cherry

The iPod from Apple is ten years old now and some 300 million of them have been sold.

FORBES: iPod is Ten Years Old: I Invented it 20 Years Ago

This, a moment of relative calm, presents an opportunity to reconsider a policy that is now almost ten years old.

ECONOMIST: It��s time for Britain and America to rethink