Boolean logic operators 布林逻辑运算元 ; 辑运算元
Boolean operators searching 布尔逻辑检索
boolean operators 布尔运算符
boolean logical operators 布尔逻辑操作符
Conditional and Boolean Operators 条件和布尔运算操作符
Boolean and relational operators 布尔和关系操作符
Boolean Algebra Comparison operators 布尔值和比较运算符
boolean conditional logical operators 布尔条件逻辑操作符
Basic Search allows you to use + and - but you can not use Boolean operators or more complex expressions.
基本搜索允许您使用+和-，但不能使用布尔运算符或更复杂的表达式。
Take advantage of advanced search functionality (gasp!) such as plurals, truncation, and wild-card and Boolean operators when using your local library catalog or databases.
利用先进的搜索功能，比如当你搜索当地的图书馆目录或数据库时，使用复数、关键词、通配符和布尔操作符。
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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