This site is currently unavailable是什么意思?

This site is currently under construction是什么意思啊? This site is not currently available (翻译) 500 Error - Web Site is Temporarily Unavailable是什么意思 This machine is unavailable. This site is under development中文是什么意思 We're sorry that service is currently unavailable 求中文翻译 this content is unavailable for This site is under constrnction. This Site Is Not Exit! This site is under development 英语翻译10.5.4 503 Service Unavailable The server is currently u Service currently unavailable什么意思``尽快回答``