twice S2 W2 / twaɪs / 副词 , predeterminer

1 two times :

He was questioned by police twice yesterday.

twice a day/week/year etc (= two times in the same day, week etc )

Letters were delivered twice a week only.

None of our dinner menus are exactly the same twice over .

2 two times more, bigger, better etc than something else

twice as many/much (as something)

They employ 90 people, twice as many as last year.

twice as high/big/large etc (as something)

Interest rates are twice as high as those of our competitors.

twice the size/number/rate/amount etc

an area twice the size of Britain

→ once bitten, twice shy at once 1 ( 19 ) , → once or twice at once 1 ( 12 ) , → think twice at think 1 ( 8 )

THESAURUS

pair two things of the same type that you use together. Also used about two people who do something together or who you often see together : a pair of shoes | a pair of socks | Winners will receive a pair of tickets for the show. | The pair were arrested six days after the killing. | They’re a funny pair! | The British pair will be playing in the final on Saturday.

a couple (of something) two things of the same type, or a very small number of things : There were a couple of empty seats at the table. | Do you have any stamps? I just need a couple.

couple 名词 [可数名词] two people who are married or having a sexual relationship : a married couple | The couple met at university.

twins 名词 [复数形式] two children who were born on the same day to the same mother : The twins look very alike. | identical twins

duo 名词 [可数名词] two people who perform together or who are often seen together : a comedy duo

duet 名词 [可数名词] a piece of music written for two people to play : They played a duet by Brahms.

twice two times 副词 : The group meets twice a week. | She sneezed twice.