可持续性不是一个流行词，而是现代能源行业的商业必需。
I think of my pile of old paperbacks, their pages gone wobbly, like they’d once belonged to the sea.
我想起我那堆旧平装书，书页已经变得松软，仿佛它们曾经属于大海。
Great deeds are usually wrought at great risks.