C# calls wsdl method

My development environment is win11, visual studio 2022, .net 7

1. Right click on the connection service and select manage connection service

 2. Click + or add service reference 

 3. The following is the webservice address of the translation I am looking for, fill in the address. Click go and enter the namespace. Click Next

http://www.webxml.com.cn/WebServices/TranslatorWebService.asmx?wsdl

 Click Next

 click finish

 Generated class files

 call method in code

        /// <summary>
        /// http://www.webxml.com.cn/WebServices/TranslatorWebService.asmx?wsdl
        /// </summary>
        /// <returns></returns>
        [HttpGet(Name = " getEnCnTwoWayTranslator")]
        public string[] getEnCnTwoWayTranslator(string words)
        {
            BasicHttpBinding binding = new BasicHttpBinding();

            EndpointAddress address = new EndpointAddress("http://www.webxml.com.cn/WebServices/TranslatorWebService.asmx?wsdl");

            TranslatorWebServiceSoapClient client = new TranslatorWebServiceSoapClient(binding, address);
            getEnCnTwoWayTranslatorRequest request = new getEnCnTwoWayTranslatorRequest();
            request.Word = words;
            Task<getEnCnTwoWayTranslatorResponse> response3 = client.getEnCnTwoWayTranslatorAsync(request);
           string [] aa = response3.Result .getEnCnTwoWayTranslatorResult;

            return aa;        
        }

 The following is the call result display