pontium

例句：

1. 1.The price of this product has increased by 5% since last year.
   这款产品的价格自去年以来上涨了5%。
2. 2. The company's profits have doubled since the new policy was implemented.
   自从实施新政策以来，该公司的利润翻了一番。
3. 3. The currency exchange rate is changing rapidly due to global economic uncertainty.
   由于全球经济不确定性，货币兑换率正在迅速变动。