The goal has been to establish and sustain a nation of viable family farms .

目标是要建立 一 个能够使 家庭农场得以存续的国家，并 使其 维持 下去。

How can the us turn this kind of work into jobs that can sustain a family ?

美国该如何把这类工作转化为能 维持 一 个 家庭 生计的就业岗位？

To the couple every piece of tofu is precious . It help them to support their children and sustain a happy family life .

在这对夫妇眼里，每一颗豆腐都很珍贵，它们能够帮助自己 供养子女， 过上幸福 安稳的生活。

Reports say that the capsule can safely sustain a family of three for two weeks with stored food and water and can even float on water in the event of a flood .

消息说，这个太空舱储存的食物和水可以 维持 一 个 家庭三两周的生活，甚至可以在发生洪水时浮在水面上。