The set of punctuation and symbols substitute for other members of the set, even if the search term is enclosed in double quotes, or the punctuation is escaped, as shown in Listing 25.

标点和符号集是用来替换其他字符的，即使搜索词汇是包含在双引号中，或者标点符号被转义了，如清单25所示。

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Each forms a complete, enclosed big-data silo, designed to lock users into a long-term relationship and keep their data within its walls.

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