这段话怎么翻译
Family is the basic unit of society. its structure varies with the social development. In thousands of years of Chinese feudal society, self-sufficient small peasant economy play a leading role. Family is not only the basic unit of the daily life, but also production unit.
For hundreds of years, great changes have taken place in China, Chinese family structure too. Big family with large population began to divide into smaller family and stem family. The overall trend is more and more nuclear families appeared.