Sorry, I couldn't help overhearing, did you mention something about...
對不起,我無意中聽到你們的談話,你們是不是提到...
Have you ever put your trousers in the washing machine and then remembered there was a large bank note in your back pocket?
你有沒有把褲子塞洗衣機,然后又想在褲子的后兜有一張大面值的紙幣?