听到那首老歌，他心中充满了对青少年时代的怀念。

Listening to that old song filled him with ___nostalgia for his teenage years.

翻阅童年照片时，一股怀旧之情涌上她的心头。

A wave of ___nostalgia washed over her as she looked through her childhood photographs.

人们对那个生活似乎更简单的时代怀有一种特定的感伤。

There is a certain ___nostalgia for a time when life seemed simpler.