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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