This is The English We Speak from BBC Learning English, and in this programme we're learning about the phrase 'a wake-up call', which means a warning to change your current situation and stop things from getting any worse.
這是 BBC 英語學習節目《我們說的英語》,在這個節目中,我們學習了「敲響警鐘」這個短語,它的想法是警告你改變當前的狀況,阻止事情變得更糟。