正则表达式 zhèngzébiǎodáshì regular expression Origin Definitions Defs Strokes Stroke Words Sentences Sents 正则 正則 zhèngzé regular regular, especially when referring to geometric figures or shapes表达式 表達式 biǎodáshì noun expression An expression in mathematics or computing; a combination of symbols, variables, or constants that represents a value or logic.