cumulative mean

例句：

1. 1. The company's profits have been cumulative over the past year.
   公司过去一年的利润是累积的。
2. 2.The data is cumulative and can be used to predict future trends.
   这些数据是累积的，可以用来预测未来的趋势。
3. 3.The cumulative effect of these changes will have a significant impact on the economy.
   这些变化累积起来将对经济产生重大影响。