Nonrivalry has the implication that the efficient price is zero, since the marginal cost of another viewer is zero.
非竞争性意味着有效价格为零，因为增加一个观众的边际成本为零。
In addition, fireworks offer nonrivalry, in that one person's viewing of the display doesn't impinge significantly on another's viewing.
另外，烟花表演没有竞争性，即一个人观看烟花并不会明显影响其他人的欣赏。
A public good has two attributes: nonexcludability, which means the producer can't prevent the use of the good by others, and nonrivalry, which means that many people can use the good simultaneously.
公共品具备两种特征：一、非排它性：即生产者无法排除购买者以外的其他人使用这一产品，二、非竞争性：意指许多人可以同时使用该产品。
A public good has two attributes: nonexcludability, which means the producer can't prevent the use of the good by others, and nonrivalry, which means that many people can use the good simultaneously.
公共品具备两种特征：一、非排它性：即生产者无法排除购买者以外的其他人使用这一产品，二、非竞争性：意指许多人可以同时使用该产品。
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