（谷歌）翻译一段话:translateString

//-----------------------------------------------------------------------------
    //translate strToTranslate from fromLanguage to toLanguage
    //return the translated string
    //return empty string if error
    //some frequently used language abbrv:
    //Chinese Simplified:   zh-CN
    //Chinese Traditional:  zh-TW
    //English:              en
    //German:               de
    //Japanese:             ja
    //Korean:               ko
    //French:               fr    
    //more can be found at: 
    //http://code.google.com/intl/ru/apis/language/translate/v2/using_rest.html#language-params
    public string translateString(string strToTranslate, string fromLanguage, string toLanguage)
    {
        string translatedStr = "";
        string transRetHtml = "";

        ////following refer: http://python.u85.us/viewnews-335.html
        //string googleTranslateUrl = "http://translate.google.cn/translate_t";
        //Dictionary<string, string> postDict = new Dictionary<string, string>();
        //postDict.Add("hl", "zh-CN");
        //postDict.Add("ie", "UTF-8");
        //postDict.Add("text", strToTranslate);
        //postDict.Add("langpair", fromLanguage + "|" + toLanguage);
        //const string googleTransHtmlCharset = "UTF-8";
        //string transRetHtml = getUrlRespHtml(googleTranslateUrl, charset:googleTransHtmlCharset, postDict:postDict);


        ////http://translate.google.cn/#zh-CN/en/%E4%BB%96%E4%BB%AC%E6%98%AF%E8%BF%99%E6%A0%B7%E8%AF%B4%E7%9A%84
        //string googleTransBaseUrl = "http://translate.google.cn/#";
        //strToTranslate = "他们是这样说的";
        //string encodedStr = HttpUtility.UrlEncode(strToTranslate);
        //string googleTransUrl = googleTransBaseUrl + fromLanguage + "/" + toLanguage + "/" + encodedStr;
        //string transRetHtml = getUrlRespHtml(googleTransUrl);


        //http://translate.google.cn/translate_a/t?client=t&text=%E4%BB%96%E4%BB%AC%E6%98%AF%E8%BF%99%E6%A0%B7%E8%AF%B4%E7%9A%84&hl=zh-CN&sl=zh-CN&tl=en&ie=UTF-8&oe=UTF-8&multires=1&ssel=0&tsel=0&sc=1
        //strToTranslate = "他们是这样说的";
        string encodedStr = HttpUtility.UrlEncode(strToTranslate);
        string googleTransBaseUrl = "http://translate.google.cn/translate_a/t?";
        string googleTransUrl = googleTransBaseUrl;
        googleTransUrl  += "&client=" + "t";
        googleTransUrl += "&text=" + encodedStr;
        googleTransUrl += "&hl=" + "zh-CN";
        googleTransUrl += "&sl=" + fromLanguage;// source   language
        googleTransUrl += "&tl=" + toLanguage;  // to       language
        googleTransUrl += "&ie=" + "UTF-8";     // input    encode
        googleTransUrl += "&oe=" + "UTF-8";     // output   encode

        try
        {
            transRetHtml = getUrlRespHtml_multiTry(googleTransUrl);
            //[[["They say","他们是这样说的","","Tāmen shì zhèyàng shuō de"]],,"zh-CN",,[["They",[5],0,0,1000,0,1,0],["say",[6],1,0,1000,1,2,0]],[["他们 是",5,[["They",1000,0,0],["they are",0,0,0],["they were",0,0,0],["that they are",0,0,0],["they are the",0,0,0]],[[0,3]],"他们是这样说的"],["这样 说",6,[["say",1000,1,0],["said",0,1,0],["say so",0,1,0],["says",0,1,0],["say this",0,1,0]],[[3,6]],""]],,,[["zh-CN"]],1]
            
            if (extractSingleStr(@"[[[""(.+?)"","".+?"",", transRetHtml, out translatedStr))
            {
                //extrac out:They say
            }
        }
        catch
        {
            // if pass some special string, such as "彭德怀", then will occur 500 error
            // here tmp not process the error, just omit it here
        }
        
        return translatedStr;
    }

string strToTranslate = "他们是这样说的";
string translatedStr = translateString(strToTranslate, "zh-CN", "en");