Google的书籍词频统计器简直叫人着迷，它可以搜索成千上万书籍关键“词”的使用频率——从1800年到今天，然后生成一个图表。
We’re totally hooked on Google’s new book search tool, which lets you search and graph the frequency of words in millions of books from 1800 to today.
其中之一是单词计数器，它统计某一单词在几个文件中出现的次数。
One of them is a word counter, which counts for certain word occurrence in several files.
通过采用片段级统计，服务器可以在片段级别创建和管理列统计。
With fragment-level statistics, the server can create and manage column statistics at the fragment level.
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