A glass bulb filled with finely shredded aluminum or magnesium foil that is ignited by electricity to produce a short-duration high-intensity light flash for taking photographs.
闪光泡一种内部装有铝箔或镁箔的精细碎片的玻璃灯泡，用电点燃以发出短暂的高强度闪光，从而拍摄照片。
2
When his eyes locked on mine, I saw the light bulbflash overhead as a grin spread across his face.