Can you build a castle in the air?

Build castles in the air

The meaning is –To make unrealistic or impractical dreams, plans, or hopes that are unlikely to come true.

Similar idioms –

• Chase rainbows

• Live in a dream world

Examples

1. She spends all day building castles in the air instead of working toward real goals.

2. Don’t build castles in the air—you need a plan to turn your dreams into reality.

中文意思是 – 空想、不切實際的幻想 / 空想、不切实际的幻想