blue-sky

US 
UK 
  • adj.新颖而未可行的;未能付诸实行的
  • Web无价值的;不切实际的;蓝天
blue-sky
adj.
1.
新颖而未可行的;未能付诸实行的involving new and interesting ideas which are not yet possible or practical
The government has been doing some blue-sky thinking on how to improve school standards.
就如何提高学校的水平,政府仍然在作一些漫无边际的构想。

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