general-what-is >
doorway

only Doorway but lacks detail information

只有门廓但是缺乏内容

Let say it just like a [ library ] as a keyword but 
a site design  [ library ] as doorway for search engine
to be easy to search yet it lacks detail information
about the library.
Doorway most of time only for search engine keywork
to find only to more traffic.

门廓门框(虚设网页只为特定的搜索引擎
寻找特定的关键词时出现),
但却是缺乏相关性的资料

recently since (2005), there are some of websites
automatic create keyword only page

-------------------example----------------------
you type in a word at the end of its url or domain
the site will auto create a page contain the word
plus a URL which is named by this word or words

---------------------attention-----------------
do not create only keywords but on information pages
major search engines may see them as abuses 
of doorway pages

目前有些大搜索引擎已开始封锁这类的网站
例如最近有些 门廓 的网站建立关键词网页
误导查阅者进入, 只为了增加点阅数

however the page lacks information 
but only some keywords 

therefore these kind of websites were
blocked by most major search engines

这类的 门廓网站 多被搜索引擎所拒