难于登天

nán yú dēng tiān

释义

1. harder than climbing to heaven (idiom)

难于登天 的构成词

• 天 tiān: day
• 于 yú: (of time or place) in; at; on
• 登 dēng: to scale (a height)
• 难 nán: difficult (to...)
• 难 nàn: disaster