当汽车数量翻倍时，污染也会翻倍。

When the number of cars is doubled, the pollution is also doubled.

当汽车数量翻倍时，污染也会翻倍，甚至更糟。

When the number of cars is doubled, the pollution is also doubled, or even worse.

他今年在股市的投资翻倍。

He is doubling his investment in the stock market this year.

这个城市的人口每十年翻倍。

The population of the city is doubling every ten years.

公司宣布它的生产能力将翻倍。

The company announced it is doubling its production capacity.

公司正在翻倍努力以改善客户服务。

The company is doubling its efforts to improve customer service.

为了准备决赛，团队的训练次数翻倍。

The team is doubling their training sessions to prepare for the finals.

公司目标是在今年年底前将收入翻倍。

The company aims to double its revenue by the end of this ano.

由于促销活动，商店的营业收入翻倍了。

The store's taking doubled due to the promotion.

他们的目标是在未来五年内将营业额翻倍。

They aim to double their turnover within the next five years.