Listing 1 shows the process of doing searches with Boolean operators.

清单1显示了如果利用布尔操作符进行查询的过程。

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You can combine such expressions with Boolean operators (AND, or, NOT).

可以使用布尔操作符(AND, OR, NOT)组合这些表达式(AND, OR, NOT)。

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Standard Boolean operators are available, such as and, or, xor and not.

可以使用标准的布尔操作符，比如and、or、xor和not。

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