<https://oxygn.cn/huxi/ziran-liaofa/2020/07/29/4299.html#primaryImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/ImageObject>
<https://oxygn.cn/huxi/ziran-liaofa/2020/07/29/4299.html>