blue-sky

名词 blue-sky:

1. the sky as viewed during daylight
   同义词：blue sky, blue, blue air, wild blue yonder

形容词 blue-sky:

1. without immediate commercial value

blue-sky

adj.（形容词）
Unrealistic and impractical:
空想的：不切实际的，理论上的：
例句：
blue-sky marketing plans; blue-sky corporate planners.
不切实际的营销计划；空想的公司规划者