So, it is necessary to further study movement and distribution of sediments in the flow.

因而进一步展开对泥沙运动及分布问题的研究是非常必要的。

youdao

The revolution is based on the work of scientists who study the movement of the continents a process called plate tectonics.

VOA: special.2010.01.12

The authors of the latest study indicate that there probably is underreporting in the study because of population movement, inherent errors posed by dealing with samples, and inability to visit some households because of security problems.

CNN: Study: 151,000 Iraqis slain as of June 2006

Reduced demand for Scottish exports in Europe has also contributed to the lack of movement, the study said.

BBC: Scottish bank notes

Higher education is a case study in the benefits of free movement of people across borders.

WSJ: America the Popular