build castles in the air (西克 安德 泰尔德 奥夫)

Idiom Architecture

含义

to make unrealistic plans or dreams

做不切实际的计划或梦想 (zuo buqie shiji de jihua huo mengxiang)

例句

"He’s always building castles in the air instead of acting."

"他总是在做空想而不行动。" (ta zongshi zai zuo kongxiang er bu xingdong)