(informal)used to say that people seem to be doing something at a younger age than they used to, or that they seem younger because you are now older(表示做某事的人好像越来越年轻)
The band's fans are getting younger.这支乐队的歌迷越来越年轻了。
Why do police officers seem to be getting younger?为什么警察好像越来越年轻了?