- consisting of two equal, identical, or similar parts or things双的, 双料的, 双重的：
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：
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：
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：
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：
'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：
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。
- Music lower in pitch by an octave【乐】低八度的。
- twice as much or as many两倍于…的：
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
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：
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：
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：
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：
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）。
- Bridge a call that will increase the penalty points won by the defenders if the declarer fails to make the contract【桥牌】叫加倍。
- Darts a hit on the narrow ring enclosed by the two outer circles of a dartboard, scoring double【镖】投中金色环（得分加倍）。
- a person who looks exactly like another酷似的人：
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：
she had seen her husband's double.
她看到了丈夫的魂灵。
doubles
(especially in tennis and badminton) a game or competition involving sides made up of two players（尤指网球及羽毛球的）双打：the semi-finals of the doubles.
双打半决赛。
- Bell-ringing a system of change-ringing using five bells, with two pairs changing places each time【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：
Manchester United won the double twice.
曼彻斯特联队曾两次获得过双料冠军。
- Brit. a home and away victory over the same team in one season or competition（同一赛季或一系列赛对同一队的）主客场获胜：
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）：
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：
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：
Clare doubled her income overnight.
克莱尔在一夜之间使收入增加了一倍。
- with obj. archaic amount to twice as much as〈古〉总和是…的两倍：
thy fifty yet doth double five and twenty.
你的50确已达到5加20的两倍。
double up
use the winnings from a bet as stake for another bet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：
I doubled across the deck to join the others.
我跑步穿过甲板与其他人会合。
double up
share a room同宿一室：'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。”
- Bridge make a call increasing the value of the penalty points to be scored on an opponent's bid if it wins the auction and is not fulfilled【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）：
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.
double up
bend over or curl up, typically because one is overcome with pain or mirth（因剧痛或大笑而）弯着身子： 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）：
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 double back）go back in the direction one has come循原路折回：
he had to double back to collect them.
他不得不原路返回去接他们。
- Snooker pot (a ball) by making it rebound off a cushion【斯诺克】使（球）弹回。
- Nautical sail round (a headland)【航海】绕着（岬角）航行：
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：
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）.
- Music play two or more musical instruments【乐】兼奏（两种或两种以上乐器）。
- with obj. Music add the same note in a higher or lower octave to (a note)【乐】（在高或低八度上）重复（一个音符）。
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）。