为什么你还想保留它？
这有助于减轻你的犯罪感(相信我，无论如何你也会有这笔花销，所以最好保留它)。
This helps you to spend guilt free (and trust me you will spend it anyway so best to capture it).
这家公司不仅记录了你买的书，而且还保留了你浏览过但却没有购买的网页记录，从而帮助它向你推荐其他的书。
It not only tracks the books you purchase, but also keeps a record of the ones you browse but do not buy to help it recommend other books to you.
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