With marital breakdown and single parenthood increasing, step-families are becoming more and more common.

随着现代社会婚姻的动荡和单亲家庭的增多，重组家庭变得越来越普遍。

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Successful step-families are more flexible in their family boundaries than couples in a "traditional" nuclear family, and less rigid in assigning parenting roles by gender.

家庭界限方面，成功的step - families比传统的小家庭更灵活，不那么严格地按性别来安排养育孩子的角色。

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Without this support many young people will be forced to drop out, or rely on their families to step in.

没有了这项支持，很多年轻人将会被迫退学，或者依赖于他们家庭的支持。

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So we're working to provide better labeling for our food and encourage our pediatricians to screen kids for obesity during well-child visits, but then to write a prescription for families when they identify a problem with a step-by-step sort of process for what they can actually do.

WHITEHOUSE: Making Healthy Food Accessible & Affordable

The Healthy, Hunger-Free Kids Act of 2010 is an essential step in helping the 43.6 million American families who struggle every day to feed their children.

WHITEHOUSE: Bringing Healthy, Affordable Food to Underserved Communities | The White House

I'm in awe of your families -- the spouses who run their households all alone, the kids who step up at home and succeed at school and stay strong through all the challenges they face.

WHITEHOUSE: Improving Educational Opportunities for Service Members, Veterans and Their Families | The White House