Sustainability must be at the core of every stone we extract, or we extract nothing at all.
可持续性必须成为我们开采每一块石料的核心，否则我们什么也不该开采。
我对这场战争了解的不多，但我知道美国的很多年轻人都参与了这场战争。
It is wrong to have an ideal view of the world. That's where the mischief starts. That's where everything starts unravelling.
"A story is a gift that keeps on giving."
小于给定数的素数个数是该数的一个函数。
The question of technology is the question of the constellation of truth and untruth in which we live.
书籍是通往其他生活的窗户。
