你必须先有爱,然后才能变得无情。
煤炭的未来在于平衡环境责任与能源需求。
The march of science and technology does not imply growing intellectual complexity in the lives of most people. It often means the opposite.
我相信,整个世界被这种新奇而神奇的媒介(电报)启蒙的时代已不遥远。