随着年龄增长，他的记忆力开始衰退。

As he gets older, his ___memory is starting to decline.

我最美好的回忆是和家人一起在海边度假。

My happiest ___memory is vacationing at the beach with my family.

我的电脑内存不够用了，需要升级。

My computer is running out of ___memory and needs an upgrade.

随着年龄增长，她的记忆力逐渐衰退。

Her ___memory has been getting weaker as she gets older.