mathematica-8 - Mathematica 文本关键字

Question

我有一个 file.txt 看起来像这样

      key.txt
  date: Nov_17_12
  begin
     k 6.822379e+001 1.298165e+002 0.000000e+000
     k 0.000000e+000 1.298165e+002 0.000000e+000
     k 6.822379e+001 7.357968e+001 0.000000e+000
  end

  begin
     k 6.822379e+001 7.357968e+001 0.000000e+000
     k 0.000000e+000 1.298165e+002 0.000000e+000
     k 0.000000e+000 0.000000e+000 0.000000e+000
  end

   begin
     k 6.822379e+001 7.357968e+001 0.000000e+000
     k 0.000000e+000 0.000000e+000 0.000000e+000
     k 1.456291e+002 7.357968e+001 0.000000e+000
  end

  begin
     k 1.456291e+002 7.357968e+001 0.000000e+000
     k 0.000000e+000 0.000000e+000 0.000000e+000
     k1.456291e+002 0.000000e+000 0.000000e+000
  end

那么如何将其转换为 MatrixForm 为：

  A1 = {{6.822379e+001 1.298165e+002 0.000000e+000}
     {0.000000e+000 1.298165e+002 0.000000e+000}
     {6.822379e+001 7.357968e+001 0.000000e+000}}

A2 = 布拉布拉