As the externalities of knowledge are localized, they do not spill perfectly over spatial borders.

由于知识的外部性是当地化的，不能有效地跨空间溢出和转移。

youdao

As the externalities of knowledge are localized, they do not spill perfectly over spatial borders.

由于知识的外部性是当地化的，不能有效地跨空间溢出和转移。

youdao