In addition, he arbitrarily attributed to each family one woman “keeping house.” Overlap between the two groups
was not calculated until 1890, when the rapid entry of women into the paid labor force and social
issues arising from industrialization were causing women’s advocates and women statisticians to
press for more thorough and accurate accounting of women’s occupations and wages.
天,这句话到底什么意思?overlap......were,完全看不出什么是主语?请指点 |