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>
    <recentchanges rccontinue="20170522061832|709" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="蛋白质" pageid="10" revid="707" old_revid="693" rcid="719" timestamp="2024-02-16T13:19:21Z" />
      <rc type="log" ns="6" title="文件:Marasmus.jpg" pageid="0" revid="0" old_revid="0" rcid="718" timestamp="2024-02-16T13:18:52Z" />
      <rc type="edit" ns="8" title="MediaWiki:Lastmodifiedat" pageid="11" revid="706" old_revid="705" rcid="717" timestamp="2021-01-04T01:48:37Z" />
      <rc type="edit" ns="8" title="MediaWiki:Lastmodifiedat" pageid="11" revid="705" old_revid="704" rcid="716" timestamp="2020-12-26T13:58:14Z" />
      <rc type="edit" ns="8" title="MediaWiki:Lastmodifiedat" pageid="11" revid="704" old_revid="566" rcid="715" timestamp="2020-12-26T13:56:05Z" />
      <rc type="edit" ns="0" title="大肠埃希菌" pageid="268" revid="703" old_revid="702" rcid="714" timestamp="2017-05-22T06:43:10Z" />
      <rc type="edit" ns="0" title="大肠埃希菌" pageid="268" revid="702" old_revid="701" rcid="713" timestamp="2017-05-22T06:42:33Z" />
      <rc type="edit" ns="0" title="大肠埃希菌" pageid="268" revid="701" old_revid="639" rcid="712" timestamp="2017-05-22T06:37:08Z" />
      <rc type="edit" ns="0" title="致病性大肠埃希氏菌" pageid="289" revid="700" old_revid="699" rcid="711" timestamp="2017-05-22T06:20:00Z" />
      <rc type="new" ns="0" title="致病性大肠埃希氏菌" pageid="289" revid="699" old_revid="0" rcid="710" timestamp="2017-05-22T06:19:38Z" />
    </recentchanges>
  </query>
</api>