常見例句The family is a small social unit.家庭是一個小的社會單位。As the basic unit of the administrative system in China, Villages exist in Scenic spots and Historic sites vastly.摘要村莊作業(yè)我國行政體系中最基本的社會單位，廣泛存在于風景名勝區(qū)范圍內。 返回 social unit