family structure短语⁸⁴³²⁰⁺⁸ 基本例句 家族结构,家庭结构 In the past the dominant family/span> structure was three or four generations under a roof, while now a small family with three or four is the main stream of family structure. 过去的家庭结构以四世同堂为主；而现在三、四个人组成的小家庭是占大多数。 www.ielts.com.cn