需要翻译的这句话是:Suddenly,a car key dropped from an envelope taped behind the book.我想知道taped在这里怎么翻译上下文参考:http://learning.sohu.com/20090609/n264425340_5.shtml这里有全文,我问的是51空谢,万分感谢!taped的原型是什么?