xǔ / duō / chéng / shì / tuī / chū / gōng / yè / lǚ / yóu / ， / ràng / yóu / kè / cān / guān / gōng / chǎng / 。

许多城市推出工业旅游，让游客参观工厂。

Many cities have launched industrial tourism programs, allowing tourists to visit factories.