其中有一只名叫智慧的信天翁奇迹般的活下来了。它已经有60岁了，是美国存活时间最长的鸟。
One lucky survivor was Wisdom, an albatross about 60 years of age, who is the oldest-known bird in the US.
疾病基因的触发必然有它的原因，否则在疾病基因的触发之下没有人能够活下来。
There must be a reason why the body would call upon a gene to express itself. Otherwise, none of us would be able to survive the onslaught of genetic expression.
没有了它，你就不可能活下来。
河马住在非洲的热的部分，它是哺乳动物，也就是说，它的孩子们生下来是活的，而且，它们喝妈妈身上的牛奶。
The hippopotamus, or hippo, lives in the hot part of Africa, it's a mammal, that is, its babies are born alive, and they drink milk from their mother's body.
虽然克努特是30多年来第一只在柏林动物园出生并活下来的北极熊，但是它的短暂一生从最初就被悲剧所残噬着。
Although Knut was the first polar bear to be born and survive at Berlin Zoo in more than 30 years, his young life was blighted by tragedy from the start.
虽然克努特是柏林动物园30多年来第一只出生并活下来的北极熊，但是它的短暂一生从最初就被悲剧所残噬着。
Although Knut was the first polar bear to be born and survive at Berlin Zoo in more than 30 years, his young life was blighted by tragedy from the start.
河马住在非洲的热的部分，它是哺乳动物，也就是说，它的孩子们生下来是活的，而且，它们喝妈妈身上的牛奶。
The hippopotamus , or hippo, lives in the hot part of Africa, it's a mammal, that is, its babies are born alive, and they drink milk from their mother's body.
它的第一个主人认为它不可能活下来。
它使得奶牛幸免于病毒而活下来，由此得出那原因在于：眉毛是如何使人类幸存下来的？
This bottleneck effect made the cows immune to the virus and helped them survive so the reason I find it strange eye brows are there is because, how did it help humans survive?
它使得奶牛幸免于病毒而活下来，由此得出那原因在于：眉毛是如何使人类幸存下来的？
This bottleneck effect made the cows immune to the virus and helped them survive so the reason I find it strange eye brows are there is because, how did it help humans survive?
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