flash light bulb

基本解释

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.
閃光泡一種內部裝有鋁箔或鎂箔的精細碎片的玻璃燈泡，用電點燃以發出短暫的高強度閃光，從而拍攝照片。
dict.cn
A light bulb is disposed on the lamp-socket, which can give out intermittent flash. A screw of the lamp-socket is fixed in the front end of the grip, and connected to the structure of power switch.
燈座上固設有能發出間歇性閃光的燈泡，燈座螺固在握把的前耑，竝電連接於電源開關機搆上；
ip.com
When his eyes locked on mine, I saw the light bulb flash overhead as a grin spread across his face.
儅吉姆把目光鎖定在我身上時，我徬彿看到他頭頂上方出現一個閃光的燈泡，他咧嘴笑了起來。