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>
    <abusefilters>
      <filter id="1" description="廣告過濾1" pattern="new_text contains &quot;外送&quot; | &#13;&#10;new_wikitext contains &quot;外送&quot;" />
      <filter id="2" description="廣告過濾2" pattern="new_text contains &quot;外約&quot; | &#13;&#10;new_wikitext contains &quot;外約&quot;" />
      <filter id="3" description="廣告過濾3" pattern="new_text contains &quot;高檔茶&quot; | &#13;&#10;new_wikitext contains &quot;高檔茶&quot;" />
      <filter id="4" description="廣告過濾4" pattern="new_text contains &quot;找小姐&quot; | &#13;&#10;new_wikitext contains &quot;找小姐&quot;" />
      <filter id="5" description="廣告過濾5" pattern="new_text contains &quot;叫小姐&quot; | &#13;&#10;new_wikitext contains &quot;叫小姐&quot;" />
      <filter id="6" description="廣告過濾6" pattern="new_text contains &quot;外送茶&quot; | &#13;&#10;new_wikitext contains &quot;外送茶&quot;" />
      <filter id="7" description="廣告過濾7" pattern="new_text contains &quot;美女外送&quot; | &#13;&#10;new_wikitext contains &quot;美女外送&quot;" />
      <filter id="8" description="廣告過濾8" pattern="new_text contains &quot;援交網&quot; | &#13;&#10;new_wikitext contains &quot;援交網&quot;" />
      <filter id="9" description="廣告過濾9" pattern="new_text contains &quot;口交&quot; | &#13;&#10;new_wikitext contains &quot;口交&quot;" />
    </abusefilters>
  </query>
</api>