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fredrick the great of prussia was very, very keen for the germans to adopt the potato and to eat it, because he realized that if you had two sources of carbohydrate, wheat and potatoes, you get less price volatility in bread.
普鲁士的弗雷德里克大帝一度非常希望 德国人接受土豆,食用土豆。 因为他认为,如果有小麦和土豆这两种碳水化合物的来源, 可以减少面包价格的动荡。