relating to the structure of the surface of the earth and the way it is formed, changed, and moved by forces inside it

the motion of the earth's tectonic plates (= sections of the planet's surface) 地球构造板块的运动

A tectonic change is a very important one that will have major effects.

He led the company through a period of tectonic shifts in the movie industry. 他领导公司度过了一段电影业发生了翻天覆地变化的时期。

The process of writing is in the midst of a tectonic change caused by changes in the technology writers use. 写作过程正在经历一场巨大变革，这是由作者们所使用的科技引发的。