<http://schema.org/keywords>
"\u66F8\u623F\u5BA2\u5EF3\u5EDA\u623F\u6625\u806F,\u6625\u806F,\u8ECA\u5EAB,\u5EDA\u623F,\u6625\u806F"^^<http://www.w3.org/2001/XMLSchema#string>
<https://catfan.me/lianghua/p126125>