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Innovation in quarrying isn't just about machinery; it's about vision and sustainability.

數(shù)學(xué)中最美麗的東西是復(fù)雜背后的簡單思想。

Enjoyment appears at the boundary between boredom and anxiety, when the challenges are just balanced with the person’s capacity to act.

程序最重要的屬性是它是否實(shí)現(xiàn)了用戶的意圖。