twice
- adv.两次;两倍;两遍
twiceadv.
两次；两遍
two times; on two occasions
I don't know him well; I've only met him twice.
我跟他不熟悉，只见过两次面。
They go there twice a week/month/year .
他们每星期 / 每月 / 每年去那里两次。
a twice-monthly/yearly newsletter
半月 / 半年刊的简讯
两倍
double in quantity, rate, etc.
an area twice the size of Wales
两倍于威尔士大小的地区
Cats sleep twice as much as people.
猫睡觉的时间比人长一倍。
At 56 he's twice her age.
他56岁，年龄比她大一倍。
not just once but twice
她胃中的药物足够毒死她两次的。
There was enough of the drug in her stomach to kill her twice over.
an unusual or unpleasant event is not likely to happen in the same place or to the same people twice
after an unpleasant experience you are careful to avoid sth similar
twice
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1
ADV 两次
If something happens twice, there are two actions or events of the same kind.He visited me twice that fall and called me on the telephone often...
那年秋天他来看过我两次，而且经常给我打电话。
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2
ADV (表示频率)每天两次/一周两次
You use twice in expressions such as twice a day and twice a week to indicate that two events or actions of the same kind happen in each day or week.I phoned twice a day, leaving messages with his wife...
我每天打两次电话，托他妻子捎口信。
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3
ADV 两倍;强(或好、难)得多
If one thing is, for example, twice as big or old as another, the first thing is two times as big or old as the second. People sometimes say that one thing is twice as good or hard as another when they want to emphasize that the first thing is much better or harder than the second.The figure of seventy-million pounds was twice as big as expected.
7,000 万英镑的金额是预期的两倍。
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4
PHRASE 重新考虑;慎重考虑;思忖再三
If you think twice about doing something, you consider it again and decide not to do it, or decide to do it differently.She'd better shut her mouth and from now on think twice before saying stupid things.
她最好闭上嘴巴，而且今后在说出蠢话之前先过过脑子。
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5
once or twice→ see:once
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You should visit your dentist at least twice a year .
你应该每年至少去看两次牙科医生。
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He 's already been reported twice for arriving late .
他因为迟到已经两次被告发。
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New drivers have twice as many accidents as experienced drivers .
新驾驶员所出的事故是老驾驶员的两倍。
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We go there maybe once or twice a month .
我们每月大概去那里一到两次。
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You should think twice about employing someone you 've never met .
雇用素不相识的人应三思而行。
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A comparable house in the south of the city would cost twice as much .
一栋类似的房子位于城南部就要贵一倍的价钱。
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Click the left mouse button twice to highlight the program .
双击鼠标左键来加亮突出这个程序。
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Cats sleep twice as much as people .
猫睡觉的时间比人长一倍。
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I don 't know her well , I 've only met her once or twice .
我跟她不很熟；我只见过她一两次。
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This room is twice the length of the kitchen .
这个房间的长度是厨房的两倍。
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The ball bounced twice before he could reach it .
球弹了两次他才接到。
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I go swimming twice a week .
我每星期游泳两次。
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There was enough of the drug in her stomach to kill her twice over .
她胃中的药物足够毒死她两次的。
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We fly between Rome and Paris twice daily .
我们每天有两次航班穿梭于罗马和巴黎之间。
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He visits Paris once or twice a month .
他一个月去一两次巴黎。
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Think twice before doing anything rash .
不要草率行事，要三思而行。
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It would be an exaggeration to say I knew her well ─ I only met her twice .
说我非常了解她不免言过其实——我只见过她两次。
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In summer we have to mow the lawn twice a week .
夏天我们每周得修剪草坪两次。
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The machines are inspected twice daily .
机器每日检查两次。
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The newspaper is published twice weekly .
这份报纸每周出版两次。
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The villa is cleaned twice a week .
这栋别墅一周打扫两次。
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Doing it once was just about excusable ─ doing it twice was certainly not .
这种事干一次也许还可以原谅，干两次就绝对不能了。
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It has to be given by injection , usually twice daily .
它必须通过注射摄入，通常一天两次。
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You can water down a glass of wine and make it last twice as long
你可以往杯里的葡萄酒中掺点水，当两杯来喝。
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They used to visit her grave twice a year .
他们以前每年去她的墓前凭吊两次。
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The government has twice declined to back the scheme
政府已两次拒绝支持该方案。
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Work out at a gym or swim twice a week .
一周去健身房锻炼两次，或游两次泳。
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The paper was actually twice banned under the martial regime .
在军政府时期，该报纸其实曾经两度遭禁。
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Tickets were selling at twice their face value .
这些票以其面值两倍的价钱售出。
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The car passed over the body twice , once backward and then forward .
那辆车把那人来回轧了两次，先是倒着轧的，再是往前开着轧的。
- 习语