The study says there must be a complete overhaul of air traffic control systems.

研究称必须对航空交通管理系统进行彻底的改革。

《柯林斯英汉双解大词典》

Terrorists or agents of hostile powers could mount attacks on companies and systems that control vital parts of an economy, including power stations, electrical grids, and communications networks.

恐怖分子或敌对势力的特工可以对企业和系统发动袭击，这些企业和系统控制着一个经济体的重要部分，包括发电站、电网和通信网络。

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As part of the plan, the Army Corps of Engineers built roads, canals and water-control systems throughout South Florida.

VOA: special.2010.09.21

Control systems, pretty much is, think of an automotive automobile.

控制系统，很大程度上就像你能想到的汽车的自动系统。

在学校的经验 - SpeakingMax英语口语达人

Different laws cover the tapping of phones and the placing of other forms of listening devices with different systems of control and authorisation.

ECONOMIST: Anxiety about wiretapping

Systems of rational control are permeating the networks that define our everyday consumption of technology, whether by smart phones or smart cars.

FORBES: Why Big Data Is Getting The Bully Treatment

In the distant (and even the not-so-distant) historical past, these systems of motivation and control were largely in sync.

WSJ: What's Wrong With the Teenage Mind?