cost，insurance，freight and exchange

例句：

1. 1. The cost of the new car is $50,000.
   这辆新车的价格是5万美元。
2. 2. We need to find a way to reduce our expenses.
   我们需要找到一种减少开支的方法。
3. 3. The company's profit margin has increased significantly.
   这家公司的利润率已经显著提高。
4. 1. Health insurance covers medical expenses for those who are covered by the plan.
   健康保险覆盖那些被保险计划覆盖的人的医疗费用。
5. 2. The company offers various types of life insurance policies.
   公司提供各种类型的人寿保险政策。
6. 3. The policyholder must pay a premium to maintain their insurance coverage.
   保单持有人必须支付保费以保持他们的保险覆盖。
7. 1. The freight forwarder arranged for the goods to be shipped to Europe.
   货运代理安排了货物被运往欧洲。
8. 2. The exchange rate between the two currencies fluctuates frequently.
   两种货币之间的汇率经常波动。
9. 3. The freight charges were calculated based on the weight and destination of the goods.
   运费是根据货物的重量和目的地来计算的。