- 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：
the lights started flashing
灯开始闪动
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：
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）：
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：
Carrie flashed a glance in his direction
卡莉迅速朝他的方向溜了一眼
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）：
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）：
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：
the election results flashed on the screen.
选举结果一遍又一遍地闪现在屏幕上。
- informal hold up or show (something, often proof of one's identity) quickly before replacing it〈非正式〉飞快地出示（某物, 身份证明）：
she opened her purse and flashed her ID card.
她打开手袋, 取出身份证晃了晃。
- informal make a conspicuous display of (something) so as to impress or attract attention〈非正式〉（为引人注目而）展示, 展现; 炫耀：
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 flashing] informal (especially of a man) show one's genitals briefly in public〈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：
a look of terror flashed across Kirov's face
一丝恐惧闪过基诺夫的脸
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：
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）：
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：
the grenade exploded with a yellow flash of light
手榴弹爆炸了, 闪起一团黄光
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：
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：
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”。
- Brit. a coloured patch of cloth on a uniform, worn especially on the upper arm or shoulder, used as the distinguishing emblem of a regiment, formation, or country〈英〉臂章, 肩章, 徽章：
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：
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：
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：
an electronic flash
一个电子闪光灯
mass noun if in any doubt, use flash若无把握, 请用闪光灯
as modifier flash photography.闪光摄影术。
Flash
mass noun Computing (trademark in the US) an application used to produce animation sequences that can be viewed by a browser【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：
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：
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。
- archaic of or relating to thieves, prostitutes, or the underworld, especially their language〈古〉（有关）盗贼（或妓女、黑社会）的; 切口的, 黑话的。
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。
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。
- Brit. a water-filled hollow formed by subsidence, especially any of those due to rock salt extraction in or near Cheshire〈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。