2 sentences

1. 这些女生年纪多大了？

   zhè​xiē nǚ​shēng nián​jì duō​dà le?

   How old are these girls?

   Source: OpenSubtitles

2. 我们现在的学生年龄从21岁到75岁不等。

   wǒ​men xiàn​zài de xué​sheng nián​líng cóng21 suì dào75 suì bù​děng.

   Our current students range in age from 21 to 75.

   Source: CCMatrix