have a bee in your bonnet 

informal

如果你對(duì)一件事兒是 a bee in your bonnet, 那就是說你不能停止、沒完沒了地想這件事兒。我們常用這個(gè)短語來描述一個(gè)人對(duì)某事?lián)鷳n、著急或因某事而很生氣。單詞 bonnet 在這里指的是一種帽子。

to keep talking about something again and again because you think it is very important

念念不忘;對(duì)…入迷，對(duì)…著魔

She never stops talking about dieting - she's got a real bee in her bonnet about it.

她不停地談?wù)摴?jié)食——她已完全著魔了。