He performed country music at a local restaurant when he was 10 years old,and by age 13, had built his own broadcasting station and recording device.

VOA: standard.2009.08.14

Now as you know, positive psychology is just about 10 years old.

你们知道积极心理学刚刚诞生十年。

哈佛公开课 - 幸福课课程节选

Selections for the Registry, which are recommended to Mr.Billington by the National Recording Preservation Board, must be at least 10 years old and deemed "culturally,historically or aesthetically significant."

VOA: standard.2010.07.08

In order to participate in the plan, car buyers like Georgie need to trade in a car that is at least 10-years old.

VOA: standard.2009.05.18