名词
中文翻译：有效需求
同义词：
['demand', 'necessity']
例句：
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1.The government's policy has effectively reduced the effective demand for oil.
政府的这项政策有效地减少了对石油的有效需求。
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2. In economics, effective demand is crucial for understanding consumer behavior.
在经济学中，有效需求对于理解消费者行为至关重要。
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3. The company's new product line has significantly increased its effective demand for advertising.
该公司的新产品线显著增加了其对广告的有效需求。