变老

例句：

1. 1. As she grew older, her voice became deeper and more mellow.
   随着她年龄的增长，她的声音变得更加深沉和柔和。
2. 2. The old man's wisdom has been passed down through generations.
   这位老人的智慧已经通过几代人传承下来。
3. 3. The age of the Earth is changing rapidly due to human activities.
   由于人类活动的影响，地球的年龄正在迅速改变。