"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

能源的真实成本必须同时考虑其生产和遗留影响。

Perception is not determined simply by stimulus patterns; rather it is a dynamic searching for the best interpretation of the available data.

Every ton of coal we extract carries the weight of our commitment to sustainability.

我们生活在阴沟里，但依然有人仰望星空。