castles in the air
US /ˈkæsəlz ɪn ðə ɛr/
UK /ˈkæsəlz ɪn ðə ɛr/
1.
空中楼阁, 不切实际的幻想
plans or hopes that are unlikely to come true
:
•
He's always building castles in the air about becoming a millionaire.
他总是对成为百万富翁抱有空中楼阁般的幻想。
•
Don't waste your time on castles in the air; focus on achievable goals.
不要把时间浪费在空中楼阁上；专注于可实现的目标。