消費者已經對該字詞有一定的了解，但尚未掌握該字詞所延伸的相關的細節。 In 1998, two graduate pupils at Stanford College, Larry Web site and Sergey Brin, made "Backrub", a search engine that relied with a mathematical algorithm to rate the prominence of Websites. The range calculated through the algorithm, PageRank, is actually a perform of the amount and strength of
