用C#中未加修饰的对应物替换重音/语音字符

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string input = "C#中未加修饰的对应物";
        string pattern = @"[áéíóúÁÉÍÓÚàèìòùÀÈÌÒÙãõÃÕäëïöüÄËÏÖÜ]";
        string replacement = "";
        string result = Regex.Replace(input, pattern, replacement);

        Console.WriteLine(result);
    }
}