Don't rely on an air conditioner, ventilation system or an open window to clear the air.

不要依赖空调，排气系统或打开窗户来清洁空气。

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Central air conditioner, automatic fire alarm, closed circuit TV watching system, communication network, public broadcasting and cable TV are all available in the exhibition hall.

展览大厅配有中央空调、自动火警、闭路电视、通讯网络、广播和有线电视。

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One of the cars he was towing flew off and struck a house, crushing the air conditioner and gas main system, according to Fire Chief Barry Kobrin.

他拖的其中一辆车飞了出去撞到了一所房子上，撞碎了空调和天然气主要管道。据消防队长Kobrin说。

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And all of a sudden your relatively old refrigerator or air conditioner doesn't work because the new operating system isn't backward-compatible with the systems in these devices.

CNN: Home, sweet networked home