She shook a little bell on the table, and a small black girl about twelve years old ran into the room.

VOA: special.2010.06.12

Louis XIV when he was a kid, he was about twelve or thirteen years old, he lived in Paris.

在他还是个十二,三岁的孩子的时候,他住在巴黎

耶鲁公开课 - 欧洲文明课程节选

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 happened that green and crazy summer when Frankie was twelve years old.

NPR: Excerpt: 'The Member of the Wedding'

You might think that to pretend to be simply of average intelligence when you are twelve years old like me and have the level of a senior in college is easy.

NPR: Excerpt: 'The Elegance Of The Hedgehog'