前缀a-, 无，没有。Zero-grade词根mn, 记忆，同mind.

1. Conveniently, he had developed amnesia about that part of his life.

他得了健忘症，记不起那一段生活了，倒也省心了。

2. "Could he be suffering from amnesia?" I suggested.

“他是不是患了健忘症？”我试探着问道。

3. Coercer: Amnesia - Stun effect can now affect Epic targets.

Coer:Amnesia 所造成的震晕效果将能作用在Epic级目标上.

4. It is sad that many people have got amnesia when they come out from disasters.

许多人渡过灾难以后都得了健忘症,这是可悲的.

5. Mr Robins, suffering from selective amnesia about his role in the affair, was contradicted in nearly every instance by other witnesses.

对于自己在该事件中所扮演的角色，罗宾斯先生患上了选择性失忆症，因此几乎在每次庭审中都会受到其他证人的反驳。