有人推测每100天翻两倍。

Some projections have it doubling every 100 days.

youdao

这些数据到2020年可能翻两倍甚至三倍。

Those figures could double or even triple by 2020.

youdao

如今，页岩天然气占美国天然气总产量的20%。在接下来的几年中，总产出有望翻两倍。

Shale now accounts for about 20% of U.S. gas production, but total output is expected to quadruple in coming years.

youdao

If it goes on for ten years that means that the -it'll double in seven years, so it'd be going up like two and a half fold.

如果按照此速度过上十年就意味着,七年内价格将会翻倍,所以价格应该会上涨到两倍半

耶鲁公开课 - 金融市场课程节选

they're having their rents, commercial rents tripled, not even doubled.

他们要付租金，商品房租金翻了三倍，而不只是两倍。

纽约的负面变化 - SpeakingMax英语口语达人