On the positive externality side, I doubt that more distant neighbours enjoy the show as much as you think, not knowing when it is going to start.

就正外部性而言，我怀疑那些不知道焰火表演将何时开始的远邻，是否会如你所想的那样欣赏焰火表演。

youdao

According to the economic externality theory in public economy, the economic externality in network media falls into two sides: positive externality and negative externality.

按照公共经济学的经济外部性理论，网络媒体的外部性问题分为正外部性和负外部性两个方面。

youdao

The construction and utilization of the stadium and gymnasium facilities of games have greater positive externality.

综合性大型体育赛事场馆设施的建设与使用具有较大的正外部性。

youdao

And while Eli may be correct that people who produce a lot of external value get rewarded in the long run, it would help if the economics field did a better job of rewarding positive externality generating behavior and of explicitly arguing for optimal social norms.

FORBES: Economists and the Public Good