/laɪt ||; laɪt/noun1 [U] [C] the energy from the sun, a lamp, etc that allows you to see things 光: a beam/ray of light 一道光；一线光: The light was too dim for us to read by. 光线太暗，我们不能看书。Strong light is bad for the eyes. 强光有损视力。We could see strange lights in the sky. 我们看到天上有几道奇异的光。
You may see things by sunlight, moonlight, firelight, candlelight or lamplight. 看东西可以凭借阳光(sunlight)、月光(moonlight)、火光(firelight)、烛光(candlelight)或灯光(lamplight)等。2 [C] something that produces light, for example an electric lamp 光源；电灯: Suddenly all the lights went out/came on. 突然间，所有的灯都灭了╱亮了。the lights of the city in the distance 远处的城市灯火If the lights (= traffic lights) are red, stop! 红灯就要停车！That car hasn't got its lights on. 那辆汽车还没有开灯。
A light may be on or off. You put, switch or turn a light on, off or out Shall I put the light on? It's getting dark in here. Please turn the lights out before you leave. 灯可以开着(on)，也可以关着(off)；开灯叫put／switch／turn a light on，关灯叫put／switch／turn a light off／out：Shall I put the light on? It's getting dark in here.我去开灯，好不好？这里越来越暗了。 · Please turn the lights out before you leave.离开之前，请把灯关掉。3 [C] something, for example a match, that can be used to light a cigarette, start a fire, etc 点火物（如火柴）: Have you got a light? 你有火吗？
bring sth/come to light to make sth known or to become known （使）显露，为人所知
cast light on sth→
CAST¹
give sb/get the green light→
GREEN¹
in a good, bad, etc light (used about the way that sth is seen or described by other people) well, badly, etc （指描述的角度）好／坏:
The newspapers often portray his behaviour in a bad light. 报纸常常从坏的角度来描述他的行为。 in the light of because of; considering 因为；考虑到；鉴于
set light to sth to cause sth to start burning 点燃
shed light on sth→
SHED²
*light²/laɪt ||; laɪt/adj1 not of great weight 轻的: Carry this bag -- it's the lightest. 这个袋子最轻，你拿吧。I've lost weight -- I'm five kilos lighter than I used to be. 我瘦了─比以前轻了五公斤。light clothes (= for summer) （夏天穿的）轻便衣服 [OPP] heavy 反义词为heavy
2 having a lot of light 亮的；光线充足的: In summer it's still light at 10 o'clock. 在夏天，晚上10点钟还很亮。a light room 明亮的房间 [OPP] dark 反义词为dark
3 (used about a colour) pale （指颜色）淡的，浅的: a light-blue sweater 浅蓝色羊毛套衫 [OPP] dark 反义词为dark
4 not great in amount, degree, etc 小的；少的: Traffic in London is light on a Sunday. 星期天伦敦街上车辆较少。a light prison sentence 轻的徒刑a light wind 和风a light breakfast 清淡的早餐
5 not using much force; gentle 轻柔的: a light touch on the shoulder 往肩上轻轻一拍
6 not hard or tiring 容易做的；不累人的: light exercise 不激烈的运动light entertainment/reading 轻松的娱乐╱阅读
7 (used about sleep) not deep （指睡眠）不酣的，易醒的:
I'm a light sleeper, so the slightest noise wakes me. 我睡不深，听到一点声响就会醒过来。 ➔lightness noun [U] *light³/laɪt ||; laɪt/verb (
past tense past participle lit or lighted)
1 [I,T] to begin or to make sth begin to burn 点燃: The gas cooker won't light. 煤气炉怎么点也点不着。 [T] to light a fire 生火
Lighted is usually used as an adjective before a noun. Lit is used as the past participle of the verb Candles were lit in memory of the dead. The church was full of lighted candles. lighted通常作形容词，放在名词前。lit用作过去分词：Candles were lit in memory of the dead.人们点了蜡烛追悼死者。 · The church was full of lighted candles.教堂里到处都是点燃的蜡烛。2 [T] to give light to sth 照亮: The street is well/badly lit at night. 夜里街上的路灯很亮╱不亮。We only had a small torch to light our way. 我们只有一个小手电筒照路。
light (sth) up 1 to make sth bright with light 照亮: The fireworks lit up the whole sky. 烟花照亮了整个天空。
2 (used about sb's face, eyes, etc) to become bright with happiness or excitement （指面孔、眼睛等）露出快乐或兴奋之色
3 to start smoking a cigarette 开始吸烟
light⁴/laɪt ||; laɪt/adv without much luggage 行李不多；轻装地:
I always travel light. 我总是轻装出行。