英語翻譯
Underdeveloped countries present similar problems..Among the large supermarket chains in South Africa there is considerable concentration .One thousand of the country's 31000 stores control 60% of all grocery sales,leaving the remaining 40 percent of sales to be spread among 30000 stores.In black communities in particular,retailing is on a small scale—cigarettes are often sold singly,and entire fruit inventory may consist of three or four apples in a bowl.