/twaɪs; twaɪs/ adv
1 two times 两次
*I have seen the film twice. 这部影片我看过两遍了.
* He has twice lied to us. 他对我们撒过两次谎.
2 double in quantity, rate, etc 两倍
*The car's performance is twice as good since the engine's been tuned. 这辆汽车调了发动机以後性能好了一倍.
* She did twice as much work as her brother. 她干的工作比她弟弟干的多一倍.
3 (idm 习语) be `twice the man/woman (that sb is) be much better, stronger, etc 好、强...得多
*How dare you criticize him? He's twice the man (that) you are! 你怎么竟敢说他? 他比你强多了! lightning never strikes in the same place twice => lightning1. once bitten, twice shy => once. once or twice => once. think twice about sth/doing sth => think1. ,twice `over not just once but twice 不只一次, 而是两次
*You've bought enough paint to paint the house twice over! 你买的颜料足够把这所房子粉刷两次用的!

adv, predeterminer
[Language: Old English;Origin: twiga]
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 .
two times more, bigger, better etc than something else
twice as many/much (as sth)
　They employ 90 people, twice as many as last year.
twice as high/big/large etc (as sth)
　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 shyatonce¹ (19)
→once or twiceatonce¹ (12)
→think twiceatthink¹ (8)