我强烈推荐你购买所有上述书本，最后二本书的原文是西班牙文，(如果喜欢，可以自由选购和阅读原文)。
I strongly recommend that you purchase all of the above books, the last two of which were originally written in Spanish. (Feel free to buy and read them in the original, if you prefer.)
每天至少练习上述技巧20分钟，开始可选用大字号印刷的书或文章。
Practice these techniques for at least 20 minutes a day, starting with books and articles printed in large fonts.
回到上述的例子，如果我们想要知道第5个顾客最有可能购买的产品，那么这次的结论是书和DVD。
Using the above example, if we want to know the two most likely products to be purchased by Customer no. 5, we would conclude that they are books and a DVD.
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