It is certain that the Census procedures, which lump the online sales of major traditional retailers like Walmart with " non-store retailers" like food trucks, can mask major changes in individual retail categories.

可以肯定的是，人口普查程序将沃尔玛等主要传统零售商的在线销售额与食品卡车等“非商店零售商”混为一谈，可以掩盖个别零售类别的重大变化。