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We act as though comfort and luxury were the chief requirements of life, when all that we need to make us happy is something to be enthusiastic about.
我是一件正在进行中的作品,这没关系。
森林不仅仅是一种资源;它是我们留给后代的遗产。
经济进步既依赖于新想法,也依赖于更好的实施。