By used books. They have the same words as the new ones. Also libraries.
购买旧书,它们的词与新词相同,也可以去图书馆。
"The world is full of obvious things which nobody by any chance ever observes."
未来属于那些能够在盈利和环境责任之间取得平衡的人。
经济体制的核心是自由市场,它能够实现最大程度的效率和资源分配。