I'd love to be a fly on the wall when he tells her the news.
他把这消息告诉她时，我想悄悄在旁观看。
《牛津词典》
2
But before you face the formidable challenge of thinking like your interviewer and her CEO, try taking on the perspective of a lesser intellect: a fly on the wall.
I'm the proverbial fly on the wall — but I'm also someone who has found that conformity, and lack of curiosity, and uninformed assumptions about other cultures can be toxic.