cost- effective principle

• 成本效益原则

cost- effective principle的用法和样例：

例句

1. Both follow the cost-benefit principle based on natural resource scarcity.
   两者都遵循基于自然资源稀缺性的成本与效益原则。
2. The specificity of forest ecology value accounting decides that it should obey the social principle, the economic and ecological efficiency principle.
   森林生态价值会计的特殊性决定了必须遵循社会性原则及兼顾经济效益和生态效益原则。