要成为一个成功的复制因子，有三个关键特征：寿命、繁殖能力和准确度。
To be a successful replicator, there are three key characteristics: longevity, fecundity and fidelity.
不过他们的后代不大可能有繁殖能力。
相反，三个种群的营养繁殖能力较强。
On the contrary, the ability of vegetative propagation of the three populations were strong.
鸟类正在失去繁殖能力。
它们的繁殖能力更强而且有着更低的死亡率。
槲寄生有避免精灵被盗、解开梦的秘密和促进繁殖能力的力量。
It was said to have the power to ward off theft from fairies, unlock the secrets of dreams and to promote fertility.
水的存在和可利用率也影响微生物在食品中的繁殖能力。
The presence and availability of water also affect the ability of microorganisms to colonize foods.
高浓度的PCB和其他污染物严重影响了北极熊的繁殖能力。
High levels of PCBs and other pollutants have dramatically affected the polar bear's ability to reproduce.
雄性繁殖能力受社群压力的影响，种群数量也随之受到影响。
The breeding capability of males and the population number of Rhombomys opimus are influenced by the social stress.
饲养条件的限制可能是圈养大熊猫繁殖能力衰减的主要原因。
The captive inhabitance may be the main reason for the decline in reproductive ability in giant pandas.
目的在稳定的饲养环境条件下，观察NIH小鼠生长繁殖能力。
Objective To observe the growth and fecundity of NIH mice under a stable raising condition.
同样的，雌性激素和黄体酮也影响女性的声音和身材，这也暗示了繁殖能力。
Likewise, estrogen and progesterone influence a woman's voice as well as her body dimensions, which can indicate her reproductive status.
由于圈养的大熊猫繁殖能力不强，所以大熊猫幼仔是极为罕见的。
Giant panda cubs are rare, as it is hard to get pandas to breed in captivity.
因此个体细胞根据他们在团藻中所具有的功能打开或关闭控制繁殖能力的开关。
When that happened, individual cells could turn their reproductive capacity on or off according to the function they served in Volvox's body.
科学家以繁殖能力较强的果蝇作为实验对象，可以验证这一新的理论。
Conducting their experiments on the rapidly-reproducing fruit fly, the scientists were able to test this new theory.
大量证据表明环境激素可以干扰人类生殖健康和其他动物的繁殖能力。
Numerous evidences show that the environmental hormone can disturb the reproductive health of humankind and the multiplication of other animals.
政策制定者抑制肉价能力的真正制约在于中国养猪场有限的繁殖能力。
The real constraint on policymakers' ability to rein in prices is the limited breeding capacity of China's hog farms.
那么事情对于那些繁殖能力更强，族代更迭更短的生物来说会不会好点呢？
Might the prospects be less bleak for more prolific species with shorter generation times?
广泛的说，长远来看，这些行为缺陷可能会破坏鹿鼠等种属在野外的繁殖能力。
In the wide scheme of things, these behavioral deficits could, in the long term, undermine the ability of a species such as the deer mouse to reproduce in the wild.
间接损失包含人的生产力的损失以及家畜的生长速度、繁殖能力和产奶量的下降。
Indirect costs comprised human productivity losses and the reduction in growth, fecundity and milk production in livestock.
然而它们却从不救助幼崽，以人类的理解，这是因为失去幼崽比失去具备繁殖能力的狼要好。
However, they never save cubs from humans understanding that it's better to be deprived of a new generation than of a breeder.
原本已无繁殖能力的雄性老鼠，在服用药物之后，居然能让母老鼠生出一窝小幼鼠。
After taking the pills, a male mouse that already lost his reproductive capability was able to allow a female mouse to give birth to a nest of mice.
大熊猫威胁不是来自于大熊的繁殖能力，而是来自于人类对大熊猫自然生态环境的破坏。
The main threat to the survival of the panda species come not from the poor propagation of the species, but from mankind's destruction of pandas' natural habitat.
从雌性野猪的角度来看，这是一件好事，因为雄烯酮排放最多的公猪具备最强的繁殖能力。
From a female's point of view this is a good thing, because males with the most androstonene are also the most fertile.
原因就是，人类女性对自己的生育繁殖能力一直有隐藏的动机，而其他种类的动物则恰恰相反。
That's because women have a strong motivation to hide the fact that they're fertile, unlike other members of the animal kingdom.
这一章详细探讨了反重力环境可能对行经和繁殖能力造成的影响，也谈到了在火星上诞生人类婴孩的意义。
The chapter details the possible effects of anti-gravity on menstruation and fertility, as well as the significance of a child born on Mars.
因为好多科学家很久以来一直认为，由于男性的繁殖能力可以长久保持，年老了再做父亲也没啥大不了的。
It's long been assumed by many scientists that because men remained fertile longer, becoming a dad as an old man was no big deal.
因为好多科学家很久以来一直认为，由于男性的繁殖能力可以长久保持，年老了再做父亲也没啥大不了的。
It's long been assumed by many scientists that because men remained fertile longer, becoming a dad as an old man was no big deal.
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