blue-sky
🇺🇸
/ˌbluː ˈskaɪ/
🇬🇧
/ˌbluː ˈskaɪ/
adjective
R
creative and imaginative, often not practical
The company is investing in blue-sky research to stay ahead of the competition.
該公司正在投入藍天研究，以保持在競爭中的優勢。
translation
天馬行空