C# RegEx:如何仅在文本行的中间单词中匹配字符串？

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string text = "This is a sample text with some words in the middle.";
        string pattern = @"\b\w+\b"; // 匹配单词的正则表达式

        MatchCollection matches = Regex.Matches(text, pattern);

        foreach (Match match in matches)
        {
            Console.WriteLine(match.Value);
        }
    }
}