说起午饭，那正是美国家庭生活的第二大变化。
And speaking of lunch, there's been a second big change in American family life.
现在有起过20%的美国家庭生活在贫困线以下。
More than 20% of American families now live below the poverty line.
现在有超过20%的美国家庭生活在贫困线以下。
More than 20 % of American families now live below the poverty line.
现在有超过20%的美国家庭生活在贫困线以下。
More than 20 % of American families now live below the poverty line.
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