family size

• 家庭规模

family size的用法和样例：

例句

1. The major reason for the reduction of family size is a reduction in the number of births.
   家庭规模缩小的主要原因是生育子女数量的减少。
2. The family size has become gradually smaller and nucleus family is becoming the major form of modern Chinese families.
   家庭规模逐渐缩小，核心家庭正在成为当代中国家庭的主要形式。