Cramer's rule

例句：

1. 1. The Cramer's rule states that the average lifespan of a species is directly proportional to its populationsize.
   克拉默规则指出，一个物种的平均寿命与其种群大小成正比。
2. 2. In economics, Cramer's rule is used to predict the impact of changes in interest rates on stock prices.
   在经济学中，克拉默规则被用来预测利率变化对股票价格的影响。
3. 3. The Cramer's rule can be applied to any situation where the expected value of an outcome is influenced by the number of possibleoutcomes.
   克拉默规则可以应用于任何情况，其中预期值受到可能结果数量的影响。