trebled

He's trebled his earnings in two years.

他两年间收入已增加两倍.

The newspaper's circulation has trebled since last year.

去年以来该报的发行量已增加到原来的叁倍.

As the high voltage was abruptly trebled, all the values burnt.

由于高压突然增加了两倍, 管子都烧坏了.

It's value has trebled.

它的价值已增长到原来的三倍.

When the price of oil hit the sky last year, Mr Wright's operating costs nearly trebled.

当去年石油价格涨到天高的时候, 莱特先生的经营成本也翻了三倍.

As the voltage was abruptly trebled the valves burnt.

由于高压突然增加了两倍,电子管全烧坏了.

Their profits have trebled in the last two years.

最近两年他们的利润增加了三倍.

The city has trebled the number of its prisoners to 21,000.

该市的囚犯人数增长了两倍，达到21,000人。

Profits in our company have trebled in the last two years.

我们公司的利润在这两年中增加了三倍.

The number of people in prison for drug offences has trebled since 1994.

1994年以来,在押毒犯数量已经增长了3倍.