健忘症

例句：

1. 1. She has a bad memory and often forgets things she's told her.
   她记性不好，经常忘记别人告诉她的事情。
2. 2. As we get older, it's natural to experience some degree of memory loss.
   随着年龄的增长，出现一定程度的记忆减退是很自然的。
3. 3. He has been diagnosed with a form of memory loss that affects his ability to recall events.
   他被诊断出患有一种影响他回忆事件的形式的记忆力丧失。