这个本来是在网上下载的 SpoonySonny 的 GoogleSlugTransliterator 插件，但众所周知，Google的API收费了，所以咱们这些穷人都用不起了，网上查查发现Microsoft也有提供翻译API并且不收费，权且用Bing的API代替吧。

BingSlugTransliterator.cs代码如下(双斜线注释的部分是原来GoogleAPI的，万一哪天GG又免费了咱接着用，嘿嘿):

#region using

using System;
using System.Web;
using System.Web.UI;
using BlogEngine.Core.Web.Controls;
using BlogEngine.Core;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Net;

#endregion

/// <summary>
/// Transliterate post Chinese slug into English
/// </summary>
[Extension("使用 Bing Api 将标题自动翻译并转换为英文别名", "1.0", "<a href="https://dabao.me">小火柴.NET</a>")]
public class BingSlugTransliterator
{
    /// <summary>
    /// Hooks up an event handler to the Post.Serving event.
    /// </summary>
    static BingSlugTransliterator()
    {
        Post.Saving += new EventHandler<SavedEventArgs>(Post_Saving);
    }

    /// <summary>
    /// Handles the Post.Saving event.
    /// </summary>
    private static void Post_Saving(object sender, SavedEventArgs e)
    {
        Post post = (Post)sender;
        if (post.New)
        {
            try
            {
                WebClient wb = new WebClient();
                //string url = "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&langpair=zh%7Cen&q={0}";
                string url = "http://api.microsofttranslator.com/V2/Ajax.svc/Translate?oncomplete=mycallback&appId=8A058850F59C7EAED9937E6FAD573E356F675E4A&from=zh-cn&to=en&text={0}";
                string jsonText = wb.DownloadString(string.Format(url, HttpUtility.UrlEncode(post.Title)));

                //sample: {"responseData": {"translatedText":"text"}, "responseDetails": null, "responseStatus": 200};
                //string responseStatus = jsonText.Substring(jsonText.IndexOf(""responseStatus":"), jsonText.Length - 1 - jsonText.IndexOf(""responseStatus":")).Trim();
                //string translatedText = jsonText.Substring(jsonText.IndexOf(""translatedText":""), jsonText.IndexOf("}, "responseDetails"") - jsonText.IndexOf(""translatedText":"")).Trim();
                //translatedText = translatedText.Replace(""translatedText":"", string.Empty).Replace(""", string.Empty);
                //responseStatus = responseStatus.Replace(""responseStatus":", string.Empty).Trim();
                string translatedText = Regex.Match(jsonText, @"(?<=\()[^)]*(?=\))").Value; 

                //if (responseStatus == "200")
                //{
                    string slug = Utils.RemoveIllegalCharacters(translatedText);
                    if (slug.Length > 30)
                        slug.Substring(0, 30);

                    post.Slug = Utils.RemoveIllegalCharacters(translatedText).ToLower();
                //}
            }
            catch
            {
                // We maybe need to catch some exception
            }
        }
    }
}