Just then, a siren went off - an ambulance, a cop car, or maybe a fire engine, mixing with the usual downtown racket - a cable car bell and a street musician playing Christmas carols on a sax.是什么意思_Just then, a siren went off - an ambulance, a cop car, or maybe a fire engine, mixing with the usual downtown racket - a cable car bell and a street musician playing Christmas carols on a sax.在线翻译_英语_读音_用法_例句