英 [ˌbluː ˈskaɪ] 美 [ˌbluː ˈskaɪ]
adj. 无价值的；不保险的
blue-sky //
名词 of or denoting theoretical research without regard to any future application of its result 表示“不考虑未来用途的理论研究”
a blue-sky project
动词 to theorize (about something that may not lead to any practical application) 创建(不切实际的)理论
the sky as viewed during daylight
同义词： blue sky / blue / blue air / wild blue yonder
without immediate commercial value
the company cannot afford to do blue-sky research
... Blue ribbon 蓝缎带，最高的荣誉，一流的 Blue-sky 无价值的，不切实际的 Blue fear 极度恐惧的 ...
... once in a blue moon：千载难逢，几乎不，很少 blue-sky：无价值的，不切实际的 blue fear：极度的惊恐 ...
... blue-ribbon 头等的, 第一流的 blue-sky 无价值的, 不保险的 red-blooded 精力充沛的, 活跃的 ...
... blue-sky 无价值的 ; 不切实际的 ; 不保险的 ; 普鲁司 blue-sky stock 不可靠的股票 blue-sky vine 大花邓伯花藤 ...
无价值的；不保险的
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。
The sun was radiant in a clear blue sky.
湛蓝的天空阳光灿烂。
The sun blazed down from a clear blue sky.
耀眼的阳光从清澈蔚蓝的天空中照射下来。
The Cumberland Mountains of Tennessee rose blue-gray in the afternoon sky.
VOA : special.2009.11.14
Other revelers hearkened back to the turmoil of that fateful blue-sky day in September.
CNN: Americans take to the streets amid news of bin Laden's death
David Bishop, who heads micromechanics research, plied such blue-sky pursuits as superconductivity a dozen years ago.
PARCs to perform blue-sky investigative work, how are the frontiers of scientific exploration going to be expanded?