the rates against U.S. dollars

例句：

1. 1. The company's profit margin is 20%.
   该公司的利润边际为20%。
2. 2. The cost of living in this city is higher than the national average.
   这个城市的生活成本高于全国平均水平。
3. 3. The rates for international travel have increased significantly.
   国际旅行的费用已经显著上涨。