Tickets were selling at twice their face value.

这些票以其面值的两倍价格出售。

《柯林斯英汉双解大词典》

The aeroplane will travel at twice the speed of sound.

飞机将以两倍于音速的速度飞行。

《柯林斯英汉双解大词典》

The new airplane flies at twice the speed of sound.

这架新式飞机以两倍于音速的速度飞行。

《新英汉大辞典》

Across Russia fires are running at twice the rate of normal.

VOA: standard.2010.07.23

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

Yeah, I get homesick at least twice a quarter, I think.

想，我每个季度至少想家两次。

想吃中餐的时候 - SpeakingMax英语口语达人

Wilcox says the next generation of these readers will refresh at twice the current rate.

FORBES: Magazine Article

The cost of living in Manhattan is the nation's highest, standing at twice the national average.

FORBES: Stop The Bonuses

Normally, these concerns would be addressed at twice-a-year migration meetings between the two countries.

CNN: graphic