回答

・can't stop thinking
・can't get something out of my head

「在腦海中揮之不去」可以用英語表達為can't stop thinking 或can't get something out of my head。

I know it's useless to think about it, but I can't stop thinking what he said to me yesterday.
(我知道想這些是沒有用的，但我無法停止思考他昨天對我說的話。)

I can't get his speech out of my head that I heard yesterday.
（我無法將昨天聽到的他的演講從我的腦海中抹去。）

有幫助｜0