The International Comparison Programme faces unique challenges in providing statistical methods that can be carried out in practice by countries that differ in size, culture, and diversity in goods and services available to their population.
51. 国际比较方案面临一项独特的挑战：向在地域、文化各异和人口所获货物和服务多种多样的国家提供在实践中可以使用的统计方法。