简单的英语谜语,带翻译,带答案

I guarantee,'' said the pet-shop salesman,''that this parrot will repeat every word it hears。'' A customer bought the parrot but found it would not speak a single word。Nevertheless,the salesman told the truth。Can you explain?The parrot was dead。我保证,宠物店的销售员说,这只鹦鹉会重复他听到的每一个单词,一位顾客买了这只鹦鹉但是发现它不会讲一句话,不管怎样,这个销售员讲了真话,这只鹦鹉是死的。