fourth industry的用法和样例：
例句
- Industries based on brainwork or knowledge are called the quaternary industry.
以脑力劳动或知识为基础的产业被称为第四产业。 - The emergence and boom of the knowledge industry has led to the creation of the quaternary industry theory, which further divides intellectual work from physical labor.
知识产业的形成和繁荣直接导致第四产业理论的诞生，并且该产业区分开了脑力劳动和体力劳动。
