Reports say the study may lead to better predictions of temperatures, rainfall and the intensity of weather systems.

VOA: special.2009.09.29

It's the study of existing, conventional, communicative systems.

它是关于现存的，常用的，有交流功能的系统的研究。

耶鲁公开课 - 文学理论导论课程节选

That study is Systems Physiology and that's an important subdivision of Biomedical Engineering.

这项研究叫做系统生理学,它是生物医学工程的一个重要分支

耶鲁公开课 - 生物医学工程探索课程节选

A new study in West Africa shows how farm irrigation systems powered by the sun can produce more food and money for villagers.

VOA: special.2010.01.11

The second study involved researchers at the Institute for Systems Biology in Seattle,Washington.

VOA: special.2010.03.23