The sales of this factory have increased threefold since 1980.

这个厂的销售额自1980年以来增加两倍。

The global demand for water has increased threefold over the past 50 years.

回顾过去的50 年，全球的水需求量已增加了三倍。

The average hotel occupancy rate increased threefold to over 60 per cent this month.

酒店的平均入住率上升三倍，本月已达百分之六十以上。

In a report to Congress, the analysts say combat incidents have increased threefold since 2007.

在向国会递交的报告中，分析人员表示，自2007年以来，战斗次数增加了三倍。

The number of different engine sounds has increased threefold. Gasoline and diesel engines now have different sounds.

不同的发动机音效的数增加了三倍。汽油和柴油的发动机现在拥有不同的音效。

Stimulant use in girls increased over the 10 years studied, from 1.1 to 1.6 percent, but boys still used stimulants at a threefold higher rate, consistent with the higher prevalence of ADHD in boys.

在近10年的研究中发现，在女孩中兴奋剂的使用量，从1.1%增加到1.6%，而男孩的使用量依然是高出女孩三倍，在治疗多动症中呈较高的比率。

The population increased in number threefold.

种群的数量增加了三倍。

Biofuel production based on agricultural commodities increased more than threefold from 2000 to 2007, and now covers nearly two percent of the world's consumption of transport fuels.

从2000年到2007年，以农产品为基础的生物燃料生产增长了两倍以上，现在已经占到世界运输燃料消费量的近2%。

In the past 50 years, the world's water consumption has increased nearly threefold.

在过去的50年中，世界范围内水资源的消耗量几乎增长了三倍。

They increased their risk of developing cardiovascular disease more than threefold compared to people who sleep seven hours.

他们患心血管疾病的风险比睡7个小时的人还要多3倍。

Meanwhile, SCDM's stake in the family firm had increased more than threefold in value, to Euro1.2 billion.

同时SCDM在这个家族企业中的股份的价值增加也超过了三倍，变成了12亿欧元。