将以下代码插入到 server 域中

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if ($http_user_agent ~*
"qihoobot|Baiduspider|Googlebot|Googlebot-Mobile|Googlebot-Image|Mediapartners-Google|Adsbot-Google|Feedfetcher-Google|Yahoo!
Slurp|Yahoo! Slurp China|YoudaoBot|Sosospider|Sogou spider|Sogou web
spider|MSNBot|ia_archiver|Tomato Bot") {
  return 403;
}