但在新科技(如捕捉二氧化碳或电动汽车)产生竞争性效果之前，挪威剩余的排放量将无法排除——只能被抵销。
But until new technologies, such as carbon capture or electric vehicles, become competitive, Norway's remaining emissions will not be eliminated-they will simply be offset.
经济学家认为知识并不像有形产品，是具有非竞争性的：一个人使用并不会排除他人使用。
Economists think of knowledge, unlike physical goods, as "non-rival" : use by one person does not necessarily preclude use by others.
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。
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.
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