User-Agent: Slurp
Disallow: /

User-agent: boltbrowser.com
Disallow: /

User-agent: bot2.linguee.com
Disallow: /

User-agent: spider43.yandex.ru
Disallow: /

User-agent: crawl.yahoo.net
Disallow: /

User-agent: Slurp 
Crawl-delay: 9999