It's been an age since we've seen them.
我们有很长一段时间没有见到他们了。
The car is in remarkably good condition for its age.
就车龄而论，这辆车的`状况好极了。
She entered public life at the age of 25.
她25岁时开始了经常抛头露面的工作。
The competition is open to young people under the age of 18.
这项比赛让18岁以下的青少年参加。
By the age of 21 he controlled the company.
他21岁就掌管了公司。