在美国历史上，首次出现有18岁以下子女的异性恋家庭中，大多数家庭的父母双方都全职工作。这一转变，通过对美国人口普查局数据的分析得出，反映了单收入家庭日益增长的不可负担性，生活成本和儿童保育费用的上涨是导致这一趋势的因素。尽管双收入模式正成为常态，但女性在家庭和照料责任方面仍承担着不成比例的负担。 AI
排序理由 对现有数据（人口普查局）的社会趋势分析，而非新事件或发布。
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大多数美国家庭现在都有两位全职工作的父母
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报道来源 [1]
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美国大多数家庭首次出现父母双方都全职工作，可负担能力危机已达严峻程度
A new study from Pew Research found that more heterosexual parents are holding full time jobs, even as they're expected to be more involved at home.