1. 扩张;扩充;扩大;发展
Expansion is the process of becoming greater in size, number, or amount.
expansion在线翻译
e.g. ...the rapid expansion of private health insurance.
个人健康保险的迅速发展
e.g. ...a new period of economic expansion...
经济发展的新时期
名词enlargement
名词contraction