规则运算式物件是包含规则运算式模式以及旗标的一个物件，而旗标会识别如何套用模式。
The regular expression object is an object that contains a regular expression pattern along with flags that identify how to apply the pattern.
规则运算式物件是包含规则运算式模式以及旗标的一个物件，而旗标会识别如何套用模式。
The regular expression object is an object that contains a regular expression pattern along with flags that identify how to apply the pattern.
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