More recently, while examining housing construction, the researchers discovered that illiterate, non-English-speaking Mexican workers in Houston, Texas, consistently met best-practice labor productivity standards despite the complexity of the building industry's work.

9. 最近，在检查住房建设时，研究人员发现，德克萨斯州休斯顿的文盲、不会说英语的墨西哥工人始终符合最佳实践劳动生产率标准，尽管建筑业的工作很复杂。