根据大多数计算结果，竞走者以每小时6英里的速度前进时，每小时会燃烧大约800卡路里，尽管比跑步时燃烧的热量要少，但这大约是他们走路时燃烧热量的两倍，跑步时每小时可能会燃烧大约1000卡路里或更多。
According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
首先她给一个电话服务中心打电话，这个服务中心提供电子报纸诵读服务，她以300词每分钟，接近日常语速两倍的速度，听阅《华尔街日报》。
She calls a phone service that reads newspapers aloud in a synthetic voice, and she listens to The Wall Street Journal at 300 words a minute, which is nearly twice the average pace of speech.
俄罗斯的人口正以令人担忧的速度减少，其死亡率是大多数发达国家的两倍。
Russia's population is shrinking alarmingly, its death rate double that in most developed countries.
即便以中国人寿为代表的竞争对手增长速度是它的两倍，能取得如此的业绩也是相当振奋人心的。
Revenues are expected to have risen by 14%, a powerful performance even if some competitors, notably the Chinese life insurers, are growing twice as fast.
但是它的增长速度相当于公司总收入的两倍，以大约25%的速度增长。
But it is growing more than twice as fast as the company's overall revenues, themselves still increasing at around 25% a year.
1991年以来，生产力以每年2%的速度增长，这是1978年至1987年平均增长率的两倍。
And since 1991, productivity has increased by about 2% a year, which is more than twice the 1978-1987 averages.
他们观察到树木正以30年前两倍的速度死去。
The trees they observed were dying two times as fast as trees were thirty years ago.
一些教育专家认为真实的数字可能是这一估计数字的两倍，而且在家接受教育的孩子每年正以11%的速度增长。
Some educational experts say the real figure is about double this estimate, and the ranks of homeschooled children appear to growing at a rate of about 11 percent annually.
一些教育专家认为真实的数字可能是这一估计数字的两倍，而且在家接受教育的孩子每年正以11%的速度增长。
Some educational experts say the real figure is about double this estimate, and the ranks of homeschooled children appear to growing at a rate of about 11 percent annually.
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