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Volterra
- 数值解的方法解释“战争使捕鱼量下降，食用鱼增加，鲨鱼等也随之增加，但鲨鱼的比例却大幅增加”这一现象。-Numerical interpretation of the " war to the decline of fishing, increased consumption of fish, sharks, also increased, but the proportion of sharks has increased substantially," the phenome