参考翻译:
With the implementation of the family planning policy and the change of the concept of family, the size and structure of traditional Chinese families have undergone evident changes. One is that the number of one-child families increases, resulting in a gradual decrease in the average number of family members. Another is the miniaturization trend of the family structure, which leads to the traditional extended family being replaced by nuclear family. Changes in size and structure of households contribute to simple family relationship and increasing mutual dependence of family members. However, the changes also exert negative influences, such as a surge in the speed of population aging and the increasing number of the empty-nest families.