您针对这个对象运行一个正则表达式，提取用户代理字符串。
You run a regular expression against it to extract the user agent string.
您需要根据从该字符串提取的数据填充Employee数据结构。
You need to populate the Employee data structure based on data extracted from this string.
Substring函数将从源字符串提取文本。
The Substring function will extract text from a source string.
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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