User-agent: Googlebot
Disallow: /
User-agent: googlebot-image
Disallow: /
User-agent: googlebot-mobile
Disallow: /
User-agent: MSNBot
Disallow: /
User-agent: YoudaoBot
Disallow: /
User-agent: Yahoo
Disallow: /
User-agent: Sosospider
Disallow: /