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　　Public Address systems (PA systems) are commonly used in American malls, airports and grocery stores. The announcer may provide information about flight departure times, product discounts, or help family members find each other. The biggest mall in America is located in Minnesota and is named the Mall of America. The announcer at the Mall of America broadcasts hundreds of messages every day and spends a lot of his time trying to reunite separated family members.

　　公共广播系统在美国的商场、机场、和杂货店普遍使用。广播员可能提供飞机出发时间，商品打折信息或是帮助家庭成员找到彼此。美国最大的购物场坐落在明尼苏达州，叫做"美国购物场"。美国大多数购物场的广播员每天要广播成百上千条信息，而且花大量时间努力聚合走散的家庭成员。

　　[评论]：Announcement! Attention please!一中国籍男子失踪，有一条叫小白的小狗随行。小白长着一身美丽的白毛，非常可爱，是纯种的……哎！干嘛呀？我在广播找人呢！哦，对哦，这样只能找到小白。