n. the total spent for goods or services including money and time and labor
v. be priced at
v. require to lose, suffer, or sacrifice
n. 代价, 价值, 费用
vi. 花费
vt. 使失去, 值, 使花费
1. The cost of living in this city is very high.
这个城市的生活成本很高。
2. How much does this shirt cost?
这件衬衫多少钱？
3. They want to reduce the cost of the project.
他们想降低这个项目的成本。