The total output is double that of last year.

总产量去年倍。

This box is twice as large as that one.

这个盒子那个盒子倍。

M is twice as large as N.

M 等于N倍。

They had to fight with a force twice their number.

不得不同倍于敌人作战。

Eight is the double of four. 8

4倍。

They outnumbered us three to one.

以三比人数超过我(人数比我多倍)。

Ten is the double of five.

十五倍。

I'm twice your age.

我年龄你倍。

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 和消费类电子产品能源消耗，正在按到 2020 年增加倍和到 2030 年增加倍速度增长，将达到 1,700 兆兆瓦小时。