词典释义：
consisting of two equal, identical, or similar parts or things
双的，双料的，双重的
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the double doors. 双道门。
having twice the usual size, quantity, or strength
（在大小、量或强度等方面）两倍的；双料的；特大的；特强的
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she sipped a double brandy. 她小口地喝着一杯双份的白兰地酒。
designed to be used by two people
供两人用的，双人的
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a double bed. 双人床。
having two different roles or interpretations, especially in order to deceive or confuse
两面派的，双重角色的；双关的，模棱两可的
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the furtive double life of a terrorist. 一个恐怖分子诡秘的双重生活。
used to indicate that a letter or number occurs twice in succession
（字母，数字）接连两个的
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‘otter' is spelled with a double t. ‘otter’的拼写中有接连的两个t。
(of a flower)having more than one circle of petals
（花）重瓣的
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large double blooms. 重瓣大花．
(of a domino)having the same number of pips on each half
（多米诺骨牌）两边点数相同的。
【乐】 低八度的。
twice as much or as many
两倍于…的
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the jail now houses almost double the number of prisoners it was designed for 那个监狱现在关押的囚犯数量是其设计容量的两倍
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I'll pay double what I paid last time. 我将付比上次多一倍的钱。
at or to twice the amount or extent
两倍地，加倍地
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you have to be careful, and this counts double for older people .你得小心，这对老人来说更加重要。
as two instead of the more usual one
成双地，成对地，双重地
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she thought she was seeing double .她认为自己看见了重影。
a thing which is twice as large as usual or is made up of two standard units or things
两倍物；成双物
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join the two sleeping bags together to make a double .把两个睡袋拼接在一起做成双人的。
a double measure of spirits
一杯双份的烈酒。
a thing designed to be used by two people
供两个人用的东西
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our bed was small for a double .我们的床当双人床用小了点。
a system of betting in which the winnings and stake from the first bet are transferred to a second
（打赌时的）复式下注（即第一场若赢，即将赢得钱及赌注转押在第二场上）。
【桥牌】 叫加倍。
【镖】 投中金色环（得分加倍）。
a person who looks exactly like another
酷似的人
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you could pass yourself off as his double .你简直可以充当他的替身。
a person who stands in for an actor in a film
（电影的）替身演员。
an apparition of a living person
活人的魂灵
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she had seen her husband's double .她看到了丈夫的魂灵。
(
（尤指网球及羽毛球的）双打
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the semi-finals of the doubles .双打半决赛。
【鸣钟术】 （每次将两对钟换位的）五钟变化鸣钟法。
a pair of victories in the same sport in two different competitions
（在同一运动的两种不同比赛中获得的）双料冠军
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Manchester United won the double twice .曼彻斯特联队曾两次获得过双料冠军。
（同一赛季或一系列赛对同一队的）主客场获胜
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Oldham did the double over Forest last season .上一赛季奥尔德姆队在主客场两次击败了森林队。
a number or amount which is twice as large as a contrasting or usual number or amount
双倍数（或量）
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he paid double and had a room all to himself. 他付了双倍的钱，独用了整个房间。
[no obj.]become twice as much or as many
成为两倍，增加一倍
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profits doubled in one year .利润在一年中翻了一番。
[with obj.]make twice as much or as many of (something)
使加倍，把…增加一倍
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Clare doubled her income overnight .克莱尔在一夜之间使收入增加了一倍。
[with obj.]
〈古〉 总和是…的两倍
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thy fifty yet doth double five and twenty .你的５０确已达到５加２０的两倍。
(
用打赌赢得的钱作赌注押下。
(of a member of the armed forces)move at twice the usual speed; run
（军人）以两倍的速度前进；跑步
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I doubled across the deck to join the others .我跑步穿过甲板与其他人会合。
(
同宿一室
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‘
Where's Jimmy going to sleep ?’‘He can double up with Bertie .’ “吉米睡在哪里？”“他可以和伯蒂同睡一屋。
【桥牌】 叫加倍。
[with obj.]fold or bend (paper, cloth, or other material) over on itself
折叠（纸、布或其他织物）
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the muslin is doubled and then laid in a sieve over the bowl .将细布被折叠起来，铺在碗上面的筛子里。
[no obj.](
（因剧痛或大笑而）弯着身子
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Billy started to double up with laughter .比利笑得腰都直不起来了。
clench (a fist)
握紧（拳头）
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he had one arm around her and the other fist doubled .他一只手搂着她，另一只手紧握着拳头。
[no obj.](一般作
循原路折回
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he had to double back to collect them .他不得不原路返回去接他们。
【斯诺克】 使（球）弹回。
【航海】 绕着（岬角）航行
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we struck out seaward to double the headland of the cape .我们朝着大海奋力行进，打算绕着海角航行。
[no obj.](of a person or thing)be used in or play another, different role
（人，物）兼作；兼任；兼演
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a laser printer doubles as a photocopier .激光打印机可兼作复印机。
[with obj.](of an actor)play (two parts) in the same piece
（演员在同一出戏中）兼演（两个角色）．
【乐】 兼奏（两种或两种以上乐器）。
[with obj.]
【乐】 （在高或低八度上）重复（一个音符）。
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at （或on ）the double at running speed; very fast 以跑步方式；迅速地he disappeared at the double . 他很快就消失了 -
bend double bend over into a stooping position 弓着身子，弯着腰 -
double or nothing （或〈英〉quits ） a gamble to decide whether a loss or debt should be doubled or cancelled 以已输的数额作为最后赌注（或者多输一倍，或者与赢家清账）
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double sth 使某事物翻倍
真题例句：
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sth double 某事物翻倍
真题例句：
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double duty 双倍责任
真题例句：
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double reduction 双减
真题例句：
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the Double Ninth Festival 九九重阳节
真题例句：
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be doubled (over) 被折叠
真题例句：
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the women's/men's doubles 女子双打/男子双打
真题例句：
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double up 弯腰
真题例句：
"Middle English： via Old French from Latin
