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.
该公司正在投资蓝天研究，以保持在竞争中的优势。
translation
天马行空