cost- effective principle的用法和樣例：
例句
- Both follow the cost-benefit principle based on natural resource scarcity.
兩者都遵循基于自然資源稀缺性的成本與效益原則。 - The specificity of forest ecology value accounting decides that it should obey the social principle, the economic and ecological efficiency principle.
森林生態(tài)價(jià)值會(huì )計的特殊性決定了必須遵循社會(huì )性原則及兼顧經(jīng)濟效益和生態(tài)效益原則。
