<http://schema.org/keywords>
"google SEO, google\u5F15\u6D41\u6280\u5DE7, google\u63A8\u5E7F\u4F18\u5316"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.guxiaobei.com/tag/google%e6%8e%a8%e5%b9%bf%e4%bc%98%e5%8c%96>