first-class cost

• 最初成本

first-class cost的用法和样例：

例句

1. An attempt is also made to demonstrate how better quality construction with increased initial cost can lead to lower LCC of a highway structure.
   对如何靠增加最初成本使施工质量更高来达到降低公路结构寿命周期成本的方法也进行了论证。