Mr.Pinsky is the only laureate to have been reappointed twice.

VOA: special.2011.01.31

First of all, it will only be a minute or two at a time, maybe once or twice a lecture.

首先，每次只有一两分钟，一堂课最多不超过两次。

哈佛公开课 - 幸福课课程节选

We would only meet each other once or twice a week.

我们会一周见个一、两次。

The thing is 实战 - SpeakingMax英语口语达人

North and South Korea remain technically at war, and their leaders have only met twice in 2000,and 2007.

VOA: standard.2009.10.23

But our engineers work in a three-star hotel, not very flashy, not on the spotlight, and I only promised them to raise their salaries twice a year.

而我们的工程师在三星级酒店工作，不豪华，更不引人关注，我只承诺每年涨两次薪水。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

"We can't only listen once. We've got to listen twice because sometimes when the stories are told, you hear something and you learn something.

VOA: standard.2010.02.19

If one chord holds twice as long or only half as long, then we have an irregular harmonic change--irregular rate of harmonic change.

如果某一个和弦持续的时间是其他和弦的两倍或者只有一半，这就是不规则的和声改变。

耶鲁公开课 - 聆听音乐课程节选

The first trawl is disappointing. They have only a dozen lobsters for twice as many traps.

VOA: standard.2010.07.20

While some economists predict continued recovery in 2010, Baily says the only certainty is that banks are unlikely to make the same mistakes - twice.

VOA: standard.2009.12.20