least-cost ration

例句：

1. 1. To achieve thegoal, we need to find the least-cost ration for our project.
   为了实现目标，我们需要找到我们项目的成本效益比。
2. 2. The company's decision to cutcosts was a wise one, as itresulted in a more cost-efficientration.
   该公司决定削减成本是一个明智的决定，因为它导致了更经济的比例。
3. 3. The new policyaims to improve efficiency and reduce costs,resulting in a more cost-effectiveration.
   新政策旨在提高效率和降低成本，从而获得更经济的比例。