unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,
  IdTCPClient, IdHTTP;

type
  TForm1 = class(TForm)
    IdHTTP1: TIdHTTP;
    Button1: TButton;
    Memo1: TMemo;
    Memo2: TMemo;
    Label1: TLabel;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
    function getAnswer(aText: string): string;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  sent, str1, str2: string;
  sl1: TStringList;
  i: integer;
begin
  //IdHTTP1.Connect();
  sl1:= TStringList.Create;
  sent:= memo1.Lines[0];
  for i:= 1 to memo1.Lines.Count- 1 do begin
      sent:= sent+ ' '+ memo1.Lines[i];
  end;
  for i:= 1 to Length(sent) do begin
    if sent[i]=' ' then begin
      sent[i]:= '+';
    end;
  end;
  str1:= 'http://translate.google.cn/translate_t?sl=en&hl=zh-CN&ie=GB2312&text='+ sent;
  str2:= IdHTTP1.Post(str1, sl1);
  memo2.Text:= getAnswer(str2);
  sl1.free;
end;

function TForm1.getAnswer(aText: string): string;
var
  i, a: integer;
begin
     a:= pos('id=result_box', aText);
     if a> 0 then begin
        i:= a;
        while (i< length(aText)) and (aText[i]<> '>') do begin
            i:= i+ 1;
        end;
        i:= i+ 1;
        result:= '';
        while (i< length(aText)) and (aText[i]<> '<') do begin
            result:= result+ aText[i];
            i:= i+ 1;
        end;
     end;
end;

end.