心理学家马斯洛提出了一个关于处理人类需求等级的假说。
The psychologist Maslow came up with a hypothesis dealing with the pecking order of human needs.
“总量效应”主要从总需求和总供给的角度来解释油价波动对经济的影响，主要包括“实际余额效应”、“供给冲击假说”和“收入转移假说”。
Aggregate channels explained the asymmetry from the view of aggregate demand and aggregate supply, including the real balance effect, supply-side shocks and income transfers.
一个最基本的假说是一种商品的价格越低，其需求量越大，若其他因素不变。
A basic economic hypothesis is that the lower the price of a commodity, the larger the quantity that will be demanded, other things being equal.
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