1. sociology 社会学 [例] Sociology is the study of human social behavior, especially the study of the origins, organization, institutions, and development of human society.
2. hierarchy 层次 等级体系 [例] The government is a hierarchy.
3. sociologist 社会学家
4. marriage 结婚 婚姻 [例] My sister's marriage took place at ten o'clock today.
5. phenomenon 现象
6. urban 城市的 市内的
7. rural 乡下的 田园的 [例] Crops are grown in rural areas.
8. urbanization 城市化 [例] Urbanization has taken place very rapidly in developing countries.
9. migration 移民 [例] Scientists have studied the migration of fish over long distances in the river.