We don't know yet how to build a society which is environmentally sustainable, which is shareable with everybody on the planet, which promotes stability and democracy and human rights, and which is achievable in the time-frame necessary to make it through the challenges we face.
我们现在还不知道怎么去建设一个社会 一个能够在环境上实现可持续发展的社会 一个人人都可以共享的社会 一个倡导稳定、民主和人权的社会 在危机到来之前 可以建成的社会