prix

例句：

1. 1. The cost of the product is $200.
   这个产品的价格是200美元。
2. 2. The cost of living in New York City is high.
   纽约市的生活成本很高。
3. 3. The price of gas has increased significantly since last year.
   汽油的价格自去年以来显著上涨。