Once a family is beyond maintenance, something should be done for the sake of the child.

一旦一个家庭的确难以维持，我们必须为了孩子而做一些事情。

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There was once a family consisting of a father, his four sons, and his three daughters-in-law.

从前有一户人家，家里有父亲、四个儿子和三个儿媳妇。

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The elevation of the room that once belonged only to the servants to that of design showcase for the modern family tells the story of a century of social change.

从曾经只属于仆人的房间，到现代家庭的设计展示，这种演变讲述了一个世纪以来的社会变化。

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Bonnie Speich logs on once a week to keep in touch with family.

VOA: standard.2010.07.23

My niece drew a picture of my family once when she was three.

我侄女三岁时画了张全家福

耶鲁公开课 - 死亡课程节选

Toni Robnett, who once saw a young Michael Jackson perform as part of the family pop group, the Jackson 5,was looking forward to see him perform again.

VOA: standard.2009.06.28

That limit might be flexible once a family concludes that frugality is the path to long-term wealth.

FORBES: For Financial Freedom: Reduce Expenses or Grow Income?

Moreover, the commonly-held idea that once a family reaches a certain financial status (read: the rich), worry over things like retirement, health care and discretionary spending disappears is fast losing ground.

FORBES: Rich Women & Financial Woe

All the cost-sharing policies had a maximum upper limit on out-of-pocket spending meaning once a family spent 10 percent of income on health care, the policy paid 100 percent of remaining medical bills for the balance of that year.

FORBES: Can Markets Work in Medicine?