crystal clear
清晰明了的
口語·形容非常清楚或易懂
英文釋義
very clear or easy to understand
例句
The instructions are crystal clear, so you shouldn't have any trouble following them.
典故來源
源自水晶的透明特性,比喻事物像水晶一樣清晰可見、毫無模糊。