always chasing rainbows
一直追逐不可能实现的事情
口语·形容不切实际的追求
英文释义
continuously pursuing something that is unlikely to be achieved
例句
He's always chasing rainbows with his get-rich-quick schemes, but they never work out.
典故来源
彩虹象征虚幻、难以触及的事物，追逐彩虹比喻追求不切实际或不可能实现的目标。