The wire snapped at the wall plug with a blue flash.

随着一道蓝色的闪光，墙上插座处的电线啪地一声断了。

《柯林斯英汉双解大词典》

The flash is aimed at the ceiling, wall or flash reflector, which disperses and softens the light, and bounces it back at the subject.

闪光时对准天花板，墙面或反光板，使得光线分散和柔化，并反射到被摄物上。

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You can even Angle your flash up and behind you to fill a small to normal-size room up with beautiful light. Spin it around and up at about 45 degrees to hit the wall and ceiling behind you.

你还可以使闪光灯角度向上或向你身后，将闪光灯旋转45度朝向墙壁和天花板打光，让美丽的光线充满整间房子。

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Bill Gates' grand scheme to license the world's art masterpieces and have them flash onto wall monitors in people's living rooms fizzled.

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After all, the worst that has happened, at least so far, is that the well paid kids of Wall Street were inconvenienced for a couple of hours in the Flash Crash.

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Afterwards, police fired tear gas and "flash bang" grenades near the main plaza, where Occupy Wall Street protesters have been camping.

BBC: US Occupy protesters clash with police at Oakland port