The scientific definition of time is a parameter used by humans to describe the process of material movement or the occurrence of things.

时间的科学定义是人类用以描述物质运动过程或事物发生过程的一个参数。

youdao

Human practice and animal activity are two basic forms of material movement in different level in material world.

人类实践和动物活动是物质世界中两种不同层次的物质运动形式。

youdao

The results show:(1) The quantity of material movement of vertical erosion increases with the rain intensity but decreases with the depth;

结果表明：（1）垂直侵蚀物质输移量随深度的增加而减少，随降雨强度的增加而增加；

youdao

These devices use rope-like material to carry movement from the shoulder to the prosthetic arm.

VOA: special.2009.03.10

They stay at Sinai for a year, I believe, in the text, before they begin their movement, and Numbers contains some law, and much narrative material.

他们在西奈呆了一年，我认为，文中这么写，在他们开始迁移之前，《民数记》中有很多法规和叙述材料。

耶鲁公开课 - 旧约导论课程节选

Longshore transport: movement of material parallel to the shore, also referred to as longshore drift.

UNESCO: L O S S A R Y

The annual report has revealed that DSRL was awaiting the outcome of an investigation into why not all procedures were followed in the movement of radioactive material.

BBC: Dounreay nuclear site's safety 'improving'

But the most important thing about that story, which is not often told, is that as a result after the Cuban missile crisis, immediate steps were taken to correct our inability to collect on the movement of nuclear material out of the Soviet Union to other places.

CNN: Transcript: David Kay at Senate hearing