英语词汇“economical effectiveness”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	economical effectiveness
释义	economical effectiveness 基本例句经济效益 One hardly needs to mention the economic effect of their activities.她们的活动所产生的经济效益就不必提了。 Its ecological and economical benefit is the focal point at present.其生态效益和经济效益是当今研究的热点。
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