The cascading drop-down control works as follows.

级联式下拉控件的工作方式如下。

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A particular thread of control works its way through multiple objects in the system.

但也有一个特殊的控制线程是通过系统中的多个对象进行工作的。

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Therefore, to test them, you need to get direct access to information about how the control works from the control itself.

为了测试这些接口，您需要直接从控件本身获取控件如何工作的信息。

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The Office of National Drug Control Policy said it works closely with anti-doping agencies in the United States and other countries.

VOA: special.2011.04.12

It works by a control mechanism called negative feedback, and the thermostat is measuring the temperature and then sending a signal to a heater somewhere.

是通过一种叫做负反馈的控制机制,探测器测量温度,再把信号传给加热器

耶鲁公开课 - 生物医学工程探索课程节选

It turns out that in a lot of languages, C included, you the programmer knowing a bit about how the computer works and the language works, can exercise more fine-grained control.

结果在包括C语言的很多语言当中，你作为一个程序员懂得了一些计算机的工作方式,和语言的处理方式，可以更精确地控制运用它。

哈佛公开课 - 计算机科学课程节选

The Sonic Screwdriver Universal Remote Control works via a series of 13 short gestures, such as rotating, flicking, and tapping.

ENGADGET: ThinkGeek's Mark VII Sonic Screwdriver universal remote pleases Whovians in time for Comic-Con

This advanced version of automatic cruise control works alongside a system that corrects the car when it drifts out of its lane.

ECONOMIST: Motoring

Aligned against the watchmaker are retailers and free-flow-of-information types like the Electronic Frontier Foundation, who say Omega is using a law designed to control creative works to control the U.S. prices of manufactured products.

FORBES: Costco v. Omega Is About Much More Than Cheap Watches