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)我國行政躰系中最基本的社會單位,廣泛存在於風景名勝區(qū)範圍內。 返回 social unit