go (right/clean) out of somebody's mind (also slip somebody’s mind)FORGET if something goes out of your mind, you forget it, especially because you are very busy 〔尤指因很忙碌〕（完全）被某人忘记 I’m sorry. So much has been happening, it went clean out of my mind. 我很抱歉。 发生了这么多的事，我把它忘得一干二净了。
It had completely slipped her mind that Dave still had a key to the house. 她完全忘了戴夫还有一把房子的钥匙。
It had ... slipped ... mind that• He had seemed thrown for a moment, as though it had genuinely slipped his mind that he was about to be married.
→ go (right/clean) out of somebody’s mind at mind1(24)