Can you explain the concept of supply and demand in simple terms?

你能用简单的术语解释供求关系的概念吗？

同一单元的其他句子

• The government implemented a new policy to reduce carbon emissions.政府实施了一项新政策以减少碳排放。
• Despite the heavy rain, the outdoor concert proceeded as scheduled.尽管下着大雨，户外音乐会还是按计划进行了。
• The scientist's hypothesis was later confirmed by extensive experiments.科学家的假设后来被大量实验证实了。
• She has a profound understanding of classical literature.她对古典文学有深刻的理解。
• The company's profits have increased significantly over the past year.过去一年公司利润显著增长。