A fundamental change in the organization of health services was required.

公共医疗在组织上需要有一个根本性的变革。

That's the fundamental change.

那是基本变化。

The society is undergoing fundamental change.

社会正在经历根本性的变化。

A fundamental change has taken place in China.

中国发生了根本的变化。

At this time another fundamental change occurred.

这时候又发生了一个根本性的变化。