内部市场的四大支柱 — — 商品、服务、资本和人力的自由转移 — — 撑起了一整套欧盟措施，如外交政策和司法和内部事务等领域，而现在将归于从经济和金融事务到数字日程的各种新的政策领域。
The internal market’s four pillars – the free movement of goods, services, capital, and people – have underpinned broader EU measures, in areas like foreign policy and justice and home affairs, and will now be subsumed under new policy labels, from economy and financial affairs to the digital agenda.