cumulant expansion

例句：

1. 1. The company's cumulative expansion has led to a significant increase in its market share.
   公司的累积扩张已经导致其市场份额的显著增加。
2. 2.The economy is expanding due to increased investment and technological advancements.
   由于投资增加和技术的进步，经济正在扩张。
3. 3. The company's cumulative expansion has resulted in the creation of several new jobs.
   公司的累积扩张已经导致了数个新职位的创造。