private void EnviaTraducao(string expressao)
 {
     try
     {
         requestHelper.LoadRequest("https://translate.google.com/translate_a/t" + TranslateHelper.ParametrosTraducao(expressao));
         requestHelper.Host("translate.google.com");
         requestHelper.KeepAlive(true);
         requestHelper.AddRequestHeader("Upgrade-Insecure-Requests", "1");
         requestHelper.UserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36");
         requestHelper.Accept("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3");
         requestHelper.AddRequestHeader("Sec-Fetch-Site", "none");
         requestHelper.AddRequestHeader(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br");
         requestHelper.AddRequestHeader(HttpRequestHeader.AcceptLanguage, "pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7");
         requestHelper.ExecuteRequest("GET");
         string response = requestHelper.GetResponseBody();
         string retorno  = response.Substring(response.IndexOf("\"") + 1);
         retorno = retorno.Substring(0, retorno.IndexOf("\""));
     }
     catch (Exception ex)
     {
         throw ex;
     }
 }