Amid the technology-driven conformity of a digital age, Brightman's shop insists on a nostalgic mode of management — information on its books and albums rest on customers' individual exploration and shopkeeper's knowledge.
"A part of the shop is old-fashioned," Brightman said. "It's about the surprise and discovery of spending time browsing through books you never knew existed before, which gives a real sense of achievement."
分析一下you never knew existed成分关系,关键是existed是谁的谓语动词?