Boolean operator
noun /ˌbuːliən ˈɒpəreɪtə(r)/
/ˌbuːliən ˈɑːpəreɪtər/
(computing- a symbol or word such as ‘or’ or ‘and’, used in computer programs and searches to show what is or is not included
布尔运算符（计算机程序或搜索中 or 或 and 等表示 “包括” 或 “排除” 的符号或词）