词典释义：
[no obj.](of a light or something which reflects light)shine in a bright but brief, sudden, or intermittent way
（灯，反光物）闪耀
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the lights started flashing 灯开始闪动
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[as adj.
flashing ]a police car with a flashing light .一辆装有闪光灯的警车。
[with obj.]cause to shine briefly or suddenly
使闪耀；使闪动
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the oncoming car flashed its lights .迎面开来的那辆车闪了一下车灯。
[with obj.]shine or show a light to send (a signal)
亮灯发送（信号）
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red lights started to flash a warning .红灯开始闪动，发出警告。
[with obj.]give (a swift or sudden look)
迅速（或突然）看一眼
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Carrie flashed a glance in his direction 卡莉迅速朝他的方向溜了一眼
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[with two objs]
she flashed him a withering look .她眼神凌厉地扫了他一眼。
express a sudden burst of emotion, especially anger, with such a look
以闪动的眼神表达强烈的情感（尤指怒气）
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she glared at him, her eyes flashing .她怒视着他，目光如炬。
[with obj.]display (an image, words, or information) suddenly on a television or computer screen or electronic sign, typically briefly or repeatedly
（尤指简短或反复地在电视、电脑屏幕或电子招牌上）突然显示（图像、文字或信息）
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the screen flashed up a menu .屏幕上闪现出一个菜单。
[no obj.](of an image or message)be displayed in such a way
（图像，信息）闪现出来
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the election results flashed on the screen .选举结果一遍又一遍地闪现在屏幕上。
〈非正式〉 飞快地出示（某物，身份证明）
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she opened her purse and flashed her ID card .她打开手袋，取出身份证晃了晃。
〈非正式〉 （为引人注目而）展示，展现；炫耀
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they all wear those macs and flash their money about .他们全都穿着那些胶布雨衣，四处炫耀自己的钱财。
[no obj.][often as noun
〈非 正式〉 （尤指男性在公共场合短暂）露阴，裸露阴部。
[no obj., with adverbial of direction]move or pass very quickly
闪过，掠过；飞驰
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a look of terror flashed across Kirov's face 一丝恐惧闪过基诺夫的脸
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the scenery flashed by .风景一晃而过。
(of a thought or memory)suddenly come into or pass through the mind
（思绪，记忆）闪现，掠过，突发
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another stray thought flashed through her mind .她脑海里又闪过一阵迷茫。
[with obj. and adverbial of direction]send (news or information) swiftly by means of telegraphy or telecommunications
通过电报（或电信）手段迅速发送（消息，信息）
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the story was flashed around the world .这则故事通过电报（或电信）手段在世界各地迅速流传开来。
a sudden brief burst of bright light or a sudden glint from a reflective surface
闪耀，闪烁
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the grenade exploded with a yellow flash of light 手榴弹爆炸了，闪起一团黄光
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a lightning flash .闪电。
a bright patch of colour, often one used for decoration or identification
（多用作装饰或识别标志的）鲜艳色斑
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orange flashes adorn the aircraft .橙色斑点装饰着飞机。
a coloured band or highlighting field on the packaging of a product used to catch the consumer's eye
（产品包装上用来吸引顾客眼光的）色带；突显区域
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on-pack flashes offer a free ‘Taste of the Caribbean’. 凭包装上的色带可免费享用一次“加勒比之味”。
〈英〉 臂章，肩章，徽章
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a short man with the black flashes of the tank units .戴着坦克部队黑色肩章的矮个儿男子。
a thing that occurs suddenly and within a brief period of time, in particular
突发之物，闪现之物，尤指：
a sudden instance or manifestation of a quality, understanding, or humour
（某种素质、领悟或幽默的）闪现，乍现
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she had a flash of inspiration .她灵感突发。
a fleeting glimpse of something, especially something vivid or eye-catching
（尤指生动、惹眼之物的）掠影
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the blue flash of a kingfisher .翠鸟的蓝色掠影。
a newsflash
新闻简报。
a camera attachment that produces a brief very bright light, used for taking photographs in poor light
（相机的）闪光灯
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an electronic flash 一个电子闪光灯
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[mass noun]
if in any doubt, use flash 若无把握，请用闪光灯
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[as modifier]
flash photography .闪光摄影术。
(
【计算机】 （美国商标）Flash软件。
[mass noun]excess plastic or metal forced between facing surfaces as two halves of a mould close up, forming a thin projection on the finished object
（模塑过程中的）溢料，溢边。
a rush of water, especially down a weir to take a boat over shallows
（尤指为帮助行船而从堰闸里放出的）水流。
a device for producing such a rush of water
堰闸。
(of a thing)ostentatiously expensive, elaborate, or up to date
（东西）奢华的，浮华的；俗艳的，招摇的
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a flash new car .一辆招摇的新车。
(of a person)superficially attractive because stylish and full of brash charm
（人）招摇的，艳俗的
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he was carrying this money around and trying to be flash .他准备带着这笔钱四处乱转，想玩玩风度。
〈古〉 （有关）盗贼（或妓女、黑社会）的；切口的，黑话的。
〈英〉 （尤指在柴郡或其附近由于开采岩盐而沉陷形成的）积水空洞。
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flash in the pan a thing or person whose sudden but brief success is not repeated or repeatable昙花一现，过眼云烟our start to the season was just a flash in the pan . 我们在本赛季开始时的态势不过是昙花一现 -
［ORIGIN with allusion to priming of a firearm, the flash arising from an explosion of gunpowder within the lock．］
in （或like ）a flash very quickly; immediately迅速，飞快，转眼间；立刻，马上she was out of the back door in a flash . 眨眼间她已出了后门 -
（
as ）quick as a flash （especially of a person's response or reaction） very quickly（尤指人的回答、反应）迅速的，飞快的quick as a flash he was at her side . 转眼间他已到了她的身旁
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flash back （of a person's thoughts or mind） briefly and suddenly recall a previous time or incident（人的思绪）突然回到；突然忆起her thoughts immediately flashed back to last night . 她的思绪立刻飞回到昨夜 -
flash over make an electric circuit by sparking across a gap 闪络，飞弧 -
（of a fire） spread instantly across a gap because of intense heat（火团）跳火
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flash sth 使…闪烁
真题例句：
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a/the flash of sth / flashes of sth ...的闪光
真题例句：
"Middle English （in the sense ‘splash water about’）： probably imitative; compare with
