C#根据字典替换字符串

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        Dictionary<string, string> dictionary = new Dictionary<string, string>();
        dictionary.Add("apple", "fruit");
        dictionary.Add("car", "vehicle");
        dictionary.Add("book", "item");

        string input = "I have an apple, a car, and a book.";
        string output = ReplaceStrings(input, dictionary);

        Console.WriteLine(output);
    }

    static string ReplaceStrings(string input, Dictionary<string, string> dictionary)
    {
        foreach (KeyValuePair<string, string> entry in dictionary)
        {
            input = input.Replace(entry.Key, entry.Value);
        }

        return input;
    }
}