Data bits flow from cell towers through fiber and copper lines to a switching station.

数据从信号接收塔经由光纤和铜线流至交换站。

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This can include switching over to a different cell phone or cable service provider or buying unbranded breakfast cereal.

这些细节可以包括换一台不同的手机或有线电视供应商，再或者购买一般牌子的早餐麦片。

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Proteins can then do a number of jobs in the cell or outside it, working to make parts of organisms, switching other genes on and so on.

蛋白质又可以在细胞内，或细胞外进行很多活动，制造出生物体的不同部位，以及促使其他基因发生同样的变异，等等。

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In her rearview mirror she could see the guy in the Range Rover glaring at her through his polarized sunglasses and switching his cell phone to the opposite hand so he could give her the finger, but she didn't dwell on his opinion of her for more than a moment.

NPR: In 'Challenger Park,' Mom Is an Astronaut

We sure wouldn't mind finding ourselves next year toting a single phone for both cell and VOIP calls, seamlessly switching from WiFi to cell towers, and having an all around good time.

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Called UMA (Unlicensed Mobile Access), the technology is designed to provide better call quality indoors (where your cell shouldn't otherwise work, natch) by switching over from a weak cell signal to a stronger in-home WiFi signal.

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