“brain fade”别理解成“脑子衰弱了”，真实含义是“大脑一片空白”。

【例句】
I saw an old colleague on the street last week. Completely forgot her name! A serious case of brain fade. Really embarrassing.
上周我在路上看到了一位前同事。我完全忘了她的名字！大脑简直一片空白。真的尴尬至极。

I'm sure I did terribly in the exam. I had a major brain fade.
我确信我考得一团糟，因为当时我大脑彻底一片空白。