Now, the VOA Special English program Words and Their Stories. Every week at this time, we tell about popular American words and expressions. Some of these are very old. Some are new. Together, they form the living speech of the American people.______________________现在,这里是美国之音慢速英语词汇掌故节目.每星期这个时候,我们都会讲述常用的美国词语与表达.其中有些是古老的,有些是新的.它们共同构成了美国人民的日常生活用语.______________________