double over double

例句：

1. 1. The price of the product doubledafter the promotion.
   促销后，该产品的价格翻了一番。
2. 2. Hedoubled his efforts to finishthe project on time.
   他加倍努力以按时完成这个项目。
3. 3. The company doubledits profits in the last quarter.
   该公司在上一季度的利润翻了一番。