<http://schema.org/description>
"\u56DE\u6765\u4E86\uFF01\u4E1C\u897F\u51B2\u7A7F\u8D8A\u8FD8\u662F\u633A\u7D2F\u7684\u3002"^^<http://www.w3.org/2001/XMLSchema#string>
<https://catfan.me/netcat/p116148>