政治制度的衰败往往是由于无法适应变化的环境,导致僵化和最终的衰落。
We believe that sustainable development is the key to a better future.
真正的挑战不是生产更多粮食,而是用更少的浪费更聪明地种植。
找到真相的最好方法就是亲眼目睹。
Writing is a way of talking without being interrupted.