通过此函数，我们现在可在字符串中找到多个匹配项，并且可从每个匹配项中提取特定的信息片段。

With this function we can now find multiple matches within a string and extract specific pieces of the information from within each match.

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Substring 函数使用一个分隔符和索引来判断要从进入的源字符串提取哪些文本。

The Substring function uses a delimiter and index to determine what text to extract from the incoming source string.

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Substring 函数将从源字符串提取文本。

The Substring function will extract text from a source string.

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