The total output is double that of last year.

总产量是去年的两倍。

This box is twice as large as that one.

这个盒子是那个盒子的两倍。

M is twice as large as N.

M 等于N的两倍。

They had to fight with a force twice their number.

他们不得不同两倍于他们的敌人作战。

Eight is the double of four. 8

是4的两倍。

They outnumbered us three to one.

他们以三比的人数超过我们(他们的人数比我们多两倍)。

Ten is the double of five.

十是五的两倍。

I'm twice your age.

我年龄是你的两倍。

The IEA estimates that the yearly energy consumed from IT and consumer electronics is on pace to double by 2020 and triple by 2030 to 1,700 terawatt-hours.

国际能源机构估计，每年 IT 和消费类电子产品的能源消耗，正 2020 年增加倍和 2030 年增加两倍的速度增长，将达 1,700 兆兆瓦小时。