石墨烯是一种灰姑娘材料：它一直存在，但没有人注意到它。

城市林业证明自然与城市可以共同繁荣。

To write is to bear witness to the world's beauty and cruelty.

The greatest significance of cloud computing is that it lowers the threshold of innovation.

A well-designed space can change how people feel and interact with their environment.

书籍是最安静、最恒久的朋友；它们是最易接近、最睿智的顾问，也是最耐心的老师。