expansion
词根词缀：
conversion n. 转变
convert 转变 + sion 行为，行为的过程和结果 → 转变
decision n. 决定
decide 决定 + sion 行为，行为的过程和结果 → 决定
division n. 分开
divide 划分 + sion 行为，行为的过程和结果 → 分开
expansion n. 扩充
expand 使扩张 + sion 行为，行为的过程和结果 → 扩充
suspension n. 悬挂
suspend 悬挂 + sion 行为，行为的过程和结果 → 悬挂
数据来源：新东方英语词汇速记大全
相关例句：
His big book is an expansion of the little book he wrote before.
他那本大部头著作是由他以前写的那本小书扩充而成的。
On Wednesday, Peugeot said it had begun a new chapter in its history and its global expansion.
周三，标致宣布，它的企业历史和全球扩张都已翻开了新篇章。
Similarly, risk concentrations that might be acceptable at a single institution in a period of economic expansion could be dangerous if they existed at a large number of institutions simultaneously.
同样，在经济扩张时期，一个单独的机构可以接受的风险集中，如果在大量的机构中同时存在，就是十分危险的。
On circuit design, chip peripheral expansion, to achieve temperature control and regulation functions.
通过对电路的设计，对芯片的外围扩展，来达到对温度的控制和调节功能。
An unprecedented expansion in population and industry.
史无前例的人口和工业膨胀。
In some countries and regions, inequality worsened, as poor people did not reap the fruits of economic expansion, because of a lack of job opportunities, limited education or bad health.
在有些国家和地区，不平等现象出现恶化，贫困人口未能收获经济扩张的成果，原因是缺少就业机会、教育水平有限或健康状况不佳。