<http://schema.org/keywords>
"\u603B\u653F\u7597\u517B\u9662,\u8054\u60F3,\u9634\u5929\u60F3\u5230\u4E0B\u96E8\u96F7\u9E23\u95EA\u7535,\u9752\u5C9B,\u603B\u653F\u7597\u517B\u9662"^^<http://www.w3.org/2001/XMLSchema#string>
<https://catfan.me/docin/p72751>