动物繁殖需要时间。
当有更多的食物时，动物繁殖更快。
大动物没有小动物繁殖能力强。
乳是哺乳动物繁殖周期的最后阶段。
Lactation is the final phase of the reproductive cycle of mammals.
圈着的动物繁殖不好。
求偶行为是动物的一种本能，是动物繁殖的一个重要环节。
Courtship behavior is an instinct in animals and plays a very important role in reproduction.
北京amf海水农场，是中国领先的海水观赏鱼和无脊椎动物繁殖机构。
Beijing AMF Aqua Farm is the leading Marine ornamental fish hatchery in China.
数量特征的基因位点探测在医学研究，植物和动物繁殖中起着十分重要的作用。
Quantitative trait loci (QTLs) mapping is the procedure for finding and locating QTLs, which is of importance in medical research, plant and animal breeding.
目前已经有廿个州提供这样的牌照，以帮助解决动物繁殖过剩及其所导致的动物苦难的问题。
Twenty states now offer such plates to help resolve the problem of animal overpopulation and the suffering it causes.
在美国，主流观点是动物繁殖的优点相抵了跟克隆动物有关的潜在灾难，而欧洲的科学家则持相反观点。
In the US, the mainstream view is that the benefits in animal breeding offset any potential suffering associated with cloning, while many scientists in Europe take the opposite view.
马尔萨斯个人认为富裕人群会生育更多子女，正如生物学家所说，动物繁殖数量会因食物的增加而增加。
Malthus himself thought richer people would have more children and, as any biologist will tell you, animal populations increase when there is more food around.
交通安全管理局提供大量的资金，动物繁殖和技术专长，而野生动植物保护协会提供的兽医和后勤支持和配合野生动物夥伴在中国和纽约。
TSA provided much of the funding, animal reproduction and technical expertise while WCS provided veterinary and logistical support and coordination with wildlife partners in China and New York.
许多展览者一直不断地让动物繁殖，就是为了让动物幼崽能够源源不断地得到补充，以此能向碧昂斯和JayZ这样的名人来售卖拍照的机会。
Many exhibitors continually breed the animals just so they'll have a constant supply of young animals in order to sell photo ops to people like Beyonce and Jay Z.
生存和成功繁殖通常需要动物的活动与周围可预测的事件相协调。
Survival and successful reproduction usually require the activities of animals to be coordinated with predictable events around them.
尽管我们拥有追踪、捕获、保护和繁殖濒危动物的技术，但并不意味着我们真的应该这么做。
Even though we have the technology to track, capture, protect, and breed endangered animals, that doesn't imply that we should actually do it.
鲸作为社会性动物，可能需要大规模聚集的刺激来诱导繁殖行为。
Whales being sociable animals probably need the stimulus of sizeable gatherings to induce reproductives behavior.
同样，如果一种植物或动物没有留下任何可以繁殖的后代，它就不能把所有的能量浪费在使自己变得更强壮上，因为这是最可能走向灭绝的方式。
Similarly, a plant or animal cannot squander all its energy on growing a big body if none would be left over for reproduction, for this is the surest way to extinction.
很多动物只在一年的某个时候交配繁殖。
大多数爬行动物通过在陆地产卵进行繁殖。
繁殖这些变形的、残疾的和容易患有疾病的动物是一件可怕而反常的事情，而我们对这一现实已经完全地麻木了。
We've become completely desensitise to the fact that breeding these deformed, disabled, disease-prone animals is either shocking or abnormal.
狮子在动物园繁殖早已屡见不鲜了。
对人类而言，就像对大多数动物物种那样，雌性的身体状态对繁殖的成功非常重要。
In humans, as in most animal species, the state of the female body is very important for the success of reproduction.
在史前鱼类化石中发现的这类高级繁殖技术将会让我们对动物进化的理解发生重要影响。
The discovery of this kind of advanced reproductive technique among prehistoric fish fossils has important implications for our understanding of animal evolution.
生物钟控制动物吃东西、睡眠及繁殖的时间：生物钟有助于动物适应四季的变化，这一点极其重要。
This clock governs when an animal eats, sleeps and reproduces: it is hard to overstate how important it is at helping animals adapt to changing conditions throughout the seasons.
大家都知道，很多动物在面对掠夺，压力或者直接威胁的时候，会繁殖得更快。
It has been known for a while that, in the face of deprivation, stress or direct threats, many animals embark on reproduction much quicker.
同样的谣传也适用于同系繁殖的动物，当然它们在种族中也并不是较弱的。
The same myth also applies to inbreed animals, who are not always the weaker of the species.
虽然研究人员承认研究中的雌蟒有可能是基因突变的怪物，但是他们认为生物学家们应该重新思考爬行动物的繁殖行为。
While researchers admit that the female in the study may have been a genetic freak, they say the findings should press researchers to re-think reptile reproduction.
虽然研究人员承认研究中的雌蟒有可能是基因突变的怪物，但是他们认为生物学家们应该重新思考爬行动物的繁殖行为。
While researchers admit that the female in the study may have been a genetic freak, they say the findings should press researchers to re-think reptile reproduction.
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