对于大多数城镇家庭来说，住房、子女教育、医疗目前已成为家庭负担中的最主要部分，占据了他们收入的大部分．
【正确答案】：Housing, children’s education and medical care have currently become their heaviest burdens, accounting for a major part of their income.
【题目解析】：“住房”翻译成“housing”，“医疗”翻译成“medical care”，“最主要的负担”翻译成“their heaviest burdens”。
