An oxygen mask will come down from overhead in case of emergency.

如果发生紧急情况，头顶上会放下一只氧气面罩。

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These new electric buses pick up their power from overhead wires.

这些新电车从车顶上方的电线接受供电。

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In case of any other emergency, an oxygen mask will come down from overhead.

如果遇到其它紧急情况时，会从头顶上方落下一个氧气面罩。

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Heavily-decorated military types from Western countries mingled with Arab sheikhs, while aircraft roared overhead.

VOA: standard.2009.11.15

Fake clouds, projected from another machine, fluttered overhead.

VOA: standard.2010.02.25

One can see businessmen and women running down the escalators, most likely late for work, couples holding hands, others seemingly asleep as they wait to get off, listening to the music that blares from the loudspeakers overhead.

VOA: standard.2010.07.10

The broken down train's equipment for picking up power from overhead lines was faulty, a Greater Anglia spokesman said.

BBC: East Anglia trains: Ice affected electric line supply

Pop music blares from overhead speakers as forklift trucks rush around with components.

ECONOMIST: The north of England: The great divide | The

As a convoy of red and blue lights race toward the scene a sheriff's helicopter tracks the suspects from overhead.

NPR: Terror, Hope on the Streets of Compton, Part 1