They saw a big flash and a huge ball of fire reaching hundreds of feet into the sky.

他们看到一道强光和一个巨大的火球直冲天空达几百英尺。

《柯林斯英汉双解大词典》

The camera has an LED flash, which helps at close range at night, but the camera itself is balky and slow to focus and fire.

照相机有一个 LED 闪光灯，在夜晚照近距离相片时很有用，但是，照相机本身迟缓，对焦和拍照都比较慢。

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This will fire the camera's flash while shooting with a long exposure.

长时间曝光拍摄时，将会触发相机的闪光灯。

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Then Taarabt turned on the style, setting up Ramage to fire a fierce first-time shot into the far corner before freeing Priskin to flash one home from 18 yards.

BBC: Sport - Football - Preston 2-2 QPR

From there, you'll be able to use all of your iDevice's sensors as triggers, from motion through to facial recognition and even GPS. The app doesn't just fire the shutter, either -- it also gives you control over the focus and flash.

ENGADGET: Triggertrap: nine ways to activate your DSLR with an iOS device, choose one

Even Bill Thompson, a former city comptroller whose 2009 Democratic run for mayor was noted for its lack of fire, has demonstrated a limited willingness to get personal, displaying a flash of anger at a public-safety forum as he discussed his fears about his stepson's interaction with police officers.

WSJ: Politicians Get Personal in This Year's New York Mayoral Race