castle in the air meaning in English
空中城堡
空中楼阁，不切实际的想法
Examples
- Your plan is merely a castle in the air .
你的计划不过是空中楼阁而已。 - Theoreticians are busy building and refining the castles in the air of the model world .
理论家们忙于建立和改善模型世界中的空中楼阁。 - Castles in the air cost a vast deal to keep up
空中楼阁，要有一大笔费用来维持。 - Your plan is merely a castle in the air
你的计划只不过是口中楼阁而已。 - Nobody is safer than he who lives in a castle in the air
生活在空气城堡中的人是最安全的。