You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects arcontinue="膳食营养素参考摄入量|72" />
  </query-continue>
  <query>
    <allredirects>
      <r ns="0" title="大肠埃希菌" />
      <r ns="0" title="沙门菌属" />
      <r ns="0" title="矿物质" />
      <r ns="0" title="碳水化合物" />
      <r ns="0" title="维生素B1" />
      <r ns="0" title="维生素B1" />
      <r ns="0" title="维生素B1" />
      <r ns="0" title="维生素B1" />
      <r ns="0" title="维生素B2" />
      <r ns="0" title="维生素C" />
    </allredirects>
  </query>
</api>