They keep their young at home until they are physically able to survive on their own.

它们把幼崽留在家中，直到它们身体足够健壮，能够独立生存。

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In many parts of the country a family of five might struggle to survive on as little as $80 a month.

在这个国家的许多地方，一个五口之家靠每月80美元的资金很难维持生活。

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The data will certainly fuel the ongoing debate over whether physical education classes should be cut as schools struggle to survive on smaller budgets.

这些数据必定会加剧一直以来的争论，即在学校努力靠更少的预算生存之际，是否应该削减体育课程。

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The painting shows a group of sailors struggling to survive on a floating raft after the sinking of their ship,the Medusa.

VOA: special.2010.06.23

and they can't survive on that.

他们不可能只靠着这点儿工资过活。

一定要给小费 - SpeakingMax英语口语达人

But it's possible,I suggested, that we really shouldn't focus on the question, what does it take for me to survive?

但我认为，很可能，那根本不是我们应该重视的问题，比起讨论我要存活下去需要什么条件？

耶鲁公开课 - 死亡课程节选

They live in the factory's dormitory, and survive on food deliveries brought in by boat.

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Trapped in displacement camps, they survive on starvation rations in constant fear of abuse.

CNN: Schedule: World's Untold Stories

Then there's the classic small brush moustache, apparently struggling to survive on the lip.

BBC: Moustaches under threat