基本解释[经济学]受益和成本之间的关系英汉例句双语例句Objective To discuss the relationship between cost and benefit of the hypertensive control system-Hypertensive network.目的探讨高血压控制系统—高血压网络的成本与效益之间的关系。benefit-to-cost relationship更多例句专业释义经济学受益和成本之间的关系