But in recent years, he has seen both demand and supply slow.
但近年来，他发现需求和供应都放缓了。
Demand and supply
原声例句
当月 VOA Special English
经济 Crash Course
For example, let's assume that this graph shows the demand and supply of strawberries in the summer.
例如，我们假设这个图表显示的是夏季草莓的需求和供给。
BBC 听力 2021年11月合集
The mismatch between demand and supply during the pandemic has pushed up prices to their highest level in 7 years.
疫情期间的供需不平衡已将燃油价格推高至7年来的最高水平。
中高级英语短文
But growing demand and supply of e-cigarettes has also invited the watchful eyes of officials on a mission to curb vaping in the country.
但是，不断增长的电子烟需求和供应也引起了官员们的警惕，他们的任务是遏制该国的电子烟。
VOA慢速英语_美国
" Early this summer they rose to about 8%, strong demand and strong imbalance of demand and supply caused home prices to rise, " she noted.
" 今年夏初比例增长到8%，强劲的需求和严重的供需不平衡导致了房价继续上升，" 科罗拉顿指出。
TED演讲（音频版） 2022年1月合集
Higher demand and supply normally means great business opportunities for everyone who chooses to participate, and it proves one of my key assumptions in today's world: it has become good business to invest in sustainable solutions.
对于选择参与的每个人来说， 更高的需求和供应通常意味着巨大的商机，这证明了我在当今世界的一个关键假设：投资可持续解决方案已成为一项好生意。
就业、利息和货币通论（下）
For the demand schedules for particular industries can only be constructed on some fixed assumption as to the nature of the demand and supply schedules of other industries and as to the amount of the aggregate effective demand.
因为特定行业的需求表只能根据其他行业的需求和供给表的性质以及总有效需求量的一些固定假设来构建。
中文百科
供给和需求 Supply and demand
（重定向自Demand and supply）
供给和需求是一个经济学模型，它被应用作决定市场均衡价格和均衡产量。这个模型适用于竞争性市场，而不适用于市场存在垄断或者寡头垄断的情况，需求或者供给价格分别跟消费者的需求量和生产者的供给量挂钩，形成市场两种力量决定价格和产量的均衡。模型的需求与供应都是经济学的基本概念：需求指大众因需要一件产品而产生的购买要求；而供应就指企业响应大众的购买需求而提供的产品供给。
它显示了随着价格升降而其它因素不变的情况下，某个体在每段时间内所愿意买的某货物的数量。
有一则古老的经济学笑话曾经讽刺道：只要教懂一只鹦鹉说“供给”和“需求”，牠也能成为经济学家。从中可见供给和需求是当代经济学一个核心课题，而这个课题亦常见于大多数经济学教科书。
英语百科
Supply and demand 供给和需求
（重定向自Demand and supply）
In microeconomics, supply and demand is an economic model of price determination in a market. It concludes that in a competitive market, the unit price for a particular good, or other traded item such as labor or liquid financial assets, will vary until it settles at a point where the quantity demanded (at the current price) will equal the quantity supplied (at the current price), resulting in an economic equilibrium for price and quantity transacted.
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