Since labor and land are important inputs into the production of Big Macs, these differential costs feed through into the final cost of the burger.
由于劳动力和土地是生产巨无霸的重要投入,由此造成的成本差异会体现在巨无霸的最终成本上。
2
Good high schools can cost $3,000 for three years, and a high-school-age laborer can earn $150 a month; that’s a costdifferential of about $8,400—a fortune for poor peasant families.