hard costs

例句：

1. 1. The company's main expense is the rent for its office space.
   公司的主开支是办公室的租金。
2. 2.The construction of this bridge will cost millions of dollars in hard costs.
   这座桥梁的建设将需要数百万美元的硬成本。
3. 3.The project's success depends on how well we manage our hard costs.
   项目的成败取决于我们如何管理硬成本。