User-agent: Googlebot-image 
Disallow: /*.jpg$ 
Disallow: /*.gif$ 

User-agent: Sosospider
Disallow: /

User-agent: baiduspider
Disallow: /

User-agent: Baiduspider
Disallow: /

User-agent: YodaoBot
Disallow: /

User-agent: Gaisbot
Disallow: /

User-agent: MSNBot-Media
Disallow: /

User-agent: QihooBot
Disallow: /

User-agent: sogou spider 
Disallow: /

User-agent: Sogou web spider 
Disallow: /

User-agent: MJ12bot
Disallow: /