law of demand

• 需求定律,需求律

law of demand的用法和样例：

例句

1. Now economists are applying this law of demand to policies intended to improve energy efficiency and reduce greenhouse gas emissions linked to global warming.
   现在经济学家将这个需求定律运用在政策上，藉以提高能源运用效率，同时降低造成温室气体排放量。