double

• 由两个相等、相同或相似的部分或事物组成的；两倍的。

Consisting of two equal, identical, or similar parts or things; twice as much or as many.

1. Twice as much or manyA2formal

   Consisting of two equal, identical, or similar parts or things.

   双重的

   • She ordered a double espresso.
   • The room has double doors leading to the garden.
   • He received double the amount of money he expected.

   同义词dualduplicatepairedtwicetwintwofold

   反义词single

2. Made for twoA2formal

   Designed or intended for two people or things.

   双人的

   • They booked a double room at the hotel.
   • The bed is a double size.
   • We need a double stroller for the twins.

   同义词dualpairedtwin

   反义词single

3. Having two different uses or rolesB1formal

   Having two different functions, purposes, or meanings.

   双重的

   • The sofa serves a double purpose as a bed.
   • He leads a double life as a spy.
   • The word 'bat' has a double meaning.

   同义词dualduplexpairedtwintwofold

   反义词exclusivesinglesole

• 副词，表示“两次”、“双倍地”或“以双重方式”。用于说明某事以双倍程度、双重方式、加倍数量或效果进行；也可表示“成对地”或“一起”。

An adverb meaning "twice" or "in two ways." It is used to indicate that something is done to a double degree, in a twofold manner, or with twice the amount or effect. It can also mean "in a pair" or "together."

1. Twice the amount or degreeA2formal

   To a degree or extent that is twice as much.

   加倍地

   • She paid double for the express shipping.
   • The price of gas has gone up double in the last year.
   • He worked double to finish the project on time.

   同义词doublytwicetwofold

   反义词half

2. In a pair or two togetherB1informal

   In a way that involves two things or people together.

   双双地

   • They rode double on the motorcycle.
   • The children sat double on the bench.
   • We can sleep double in the guest room.

   反义词aloneindividuallysingly

• 名词，指在大小、数量、价值或力量上是两倍的事物，或指与另一人或物外表完全相同的人或物。

A noun referring to something that is twice the size, quantity, value, or strength of something else, or a person or thing that looks exactly like another.

1. Twice the amountA2formal

   A number or amount that is twice as much as something else.

   两倍

   • He ordered a double of the usual portion.
   • The price is a double of what it was last year.
   • She paid double for the express shipping.

2. LookalikeB1informal

   A person who looks exactly like another person.

   替身

   • He is your double; you could be twins.
   • The actor's double performed the dangerous stunts.
   • She met her double at the costume party.

   同义词clonecounterpartdead ringerdoppelgangermirror imageringerspitting imagetwin

3. Sports betB2informalbritish

   A bet on two different events, where both must win for the bet to succeed.

   双重投注

   • He placed a double on the two football matches.
   • Her double paid off when both teams won.
   • The bookmaker offered good odds for the double.

   同义词accumulatorparlay

• 表示使某物增加一倍或变成两倍的动词，也可表示把东西对折或复制一份。

A verb used to indicate the act of making something twice as much or as many, or of becoming twice as much or as many.

1. Increase twofoldA2formal

   To make or become twice as much or as many.

   加倍

   • The company doubled its profits this year.
   • She doubled the recipe to feed more guests.
   • The population of the town has doubled in the last decade.

   同义词duplicateredouble

   反义词halve

2. Fold overB1formal

   To bend or fold something so that one part lies on top of another.

   对折

   • He doubled the blanket and placed it on the chair.
   • She doubled the paper to fit it into the envelope.
   • Double the fabric before cutting it.

   同义词bendcreasefoldpleat

3. Serve in two rolesB2formal

   To have or perform two different functions or roles.

   身兼两职

   • The sofa doubles as a bed for guests.
   • She doubles as both the director and the lead actress.
   • This room doubles as a study and a guest room.

   同义词act as

短语动词变体double overdouble up