检验括号是否匹配的方法可用"期待的急迫程度"这个概念来描述。即后出现的"左括弧"，它等待与其匹配的"右括弧"出现的"急迫"心情要比先出现的左括弧高。-Tests whether the matching method of brackets can be used look forward to the degree of urgency to describe this concept. That have arisen since the left bracket , which wa