为了生存，他们被迫同类相食。
They were forced to practise cannibalism in order to survive.
生物被迫适应，以求生存。
蛋白物的生存取决于骨骼形成化石的方式。
The survival of the proteins depends on the way in which bones are fossilized.
社会要生存需要建立有高度适应性的行为准则。
Societies need to develop highly adaptive behavioural rules for survival.
在美国小书店生存得很好。小出版商也是一样。
In the United States small bookstores survive quite well. The same applies to small publishers.
为生存而挣扎的农民们把森林伐光来作农业用地。
Farmers struggling for survival strip the forests for agricultural land.
服装业竞争极为激烈，要想生存就要有足够的关系。
The rag trade is extremely competitive, and one needs plenty of contacts in order to survive.
他主要在纽约市工作，那里的生存空间出了名地昂贵。
He worked mainly in New York City where living space is notoriously at a premium.
经济衰退削弱了很多企业的实力，以至于很多无法再生存下去。
The recession has weakened so many businesses that many can no longer survive.
森林污染严重影响了植物的生存，其次也对野生动物造成了影响。
The pollution of the forest has seriously affected plant life and, to a lesser extent , wildlife.
物竞天择确保只有最适应环境的物种才得以生存下来，把基因传递给下一代。
Natural selection ensures only the fittest survive to pass their genes on to the next generation.
一方面，如果身体没有足够的胆固醇，我们将无法生存；另一方面，如果体内胆固醇过多，多余的胆固醇就开始让动脉变厚。
On the one hand, if the body doesn't have enough cholesterol, we would not be able to survive. On the other hand, if the body has too much cholesterol, the excess begins to line the arteries.
甚至微生物也依靠微气候生存。
Even microscopic organisms rely on microclimates for survival.
这是灌木能在北极生存的原因之一。
That's one of the reasons that shrubs survive in the Arctic.
据说恐龙是生存在200万年前。
It is said that dinosaurs were living in 200 million years ago.
中生代的动植物在新生代无法生存。
Plants and animals from the Mesozoic era were unable to survive in the Cenozoic era.
不能察觉危险的动物无法生存。
低盐度和高温有利于海星幼虫的生存。
Low salinity and high temperatures favor the survival of the starfish larvae.
一场生存的斗争随之而来。
如果锌如此缺乏，硅藻是如何生存的呢？
在这些农村地区，人们为了生存互相依赖。
In these rural areas, people depended on each other for survival.
他们依靠微气候生存。
如果婴儿不哭闹，就不太可能得到维持生存所需的关注。
If an infant does not cry out, it is unlikely to get the attention it needs to survive.
攻击性是一种天生的生存机制，一种自我保护的本能，使动物能够保护自己不受生存威胁。
Aggression is a kind of innate survival mechanism, an instinct for self preservation, that allows animals to defend themselves from threats to their existence.
我们的生存与雨林的生存息息相关。
Our survival is inextricably linked to the survival of the rainforest.
落基山脉中有熊和美洲狮生存。
“适者生存”，一个几乎无可辩驳的口号。
"the survival of the fittest," a slogan that virtually preempted all debate.
他讲述了沦为阶下囚的4个月中生存的种种不易。
He described the difficulties of surviving for four months as a captive.
颜色对它们的生存很重要。
在博尔德户外生存学校的生存营中，学生们不只是练习野营、徒步旅行或骑马。
In survival camps at BOSS students don't just practise camping, hiking or riding horses.
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