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。

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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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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。

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