苏联解体之后，繁殖系统被破坏，俄罗斯人已吃掉了大部分的肉牛。
After the collapse of the Soviet Union, Russians ate most of their beef cows as the system of reproduction broke down.
但有些时候细小病毒感染一起繁殖系统疾病。猪细小病毒是通过口或鼻腔传到肠道，然后在肠道内进行复制，并通过粪便排毒。
PPV is transmitted either by mouth or through the nose passing into the intestine where it multiplies and is passed out in faeces.
所有生物都有有限的生命周期所以繁殖后代非常重要。探究繁殖系统基本要素包括的各个生理器官(植物的和动物的)以及基因遗传。
All organisms have a finite life-span thus the need to procreate is Paramount. Explore the fundamental aspects of reproduction including physical organ (in plants and animals) and genetic inheritance.
要明了猪细小病毒对猪生殖系统的影响，重要的是要认识到猪生殖系统感染细小病毒常常发生，但是猪却不一定发病；但有些时候细小病毒感染一起繁殖系统疾病。
To understand the role of PPV in reproduction it is important to realize that reproductive infection usually occurs without disease, but sometimes there is infection with reproductive disease.
病毒没有被杀死，所以它是活病毒，它会感染你的肠道系统并繁殖。
The virus is not killed so it's a live virus, which is actually going to infect your intestinal system and reproduce.
这会影响它们的神经系统和繁殖幼鸟的能力，并可能导致肾衰竭和死亡。
This affects their nervous systems and ability to produce baby birds, and can lead to kidney failures and death.
短吻鳄会逃跑，找到进入纽约下水道系统的路并开始在那里繁殖，长得巨大，现在还使得下水道工人感到害怕。
The alligators would escape and find their way into the New York sewer system where they started reproducing, grew to huge sizes and now strike fear into sewer workers.
为恢复湄公河系统的巨鲶数量，作为圈养繁殖计划的一部分，这条鱼的卵被收成起来。
The fish's eggs were harvested as part of a captive breeding program and effort to restore giant catfish populations in the Mekong River system.
它通过操纵蚂蚁的神经系统，引起蚂蚁做出反常-----具体说来是奇怪的-----行为来帮助其自身繁殖。
The parasite hijacks the ants'nervous systems, causing the insects to perform abnormal—and oddlyspecific—behaviors that help the fungus reproduce.
如果病毒像生物那样生长，它们将搜索被感染系统中的其他病毒，并与他们交换代码，然后繁殖全新的后代。
As the viruses grow more lifelike, they could search for other viruses in the infected system with which they can swap code and create new offspring.
操作系统一旦拥有最多的和最易感染的用户，这样的环境同样为病毒提供了繁殖的肥沃土壤。
The same ecosystem that provides the biggest, most susceptible audience also provides the most fertile breeding ground for the nasty executables.
他们创造了一个自我维系和自我繁殖的生态系统，让阿森松岛更适合人类居住。
They created a self-sustaining and self-reproducing ecosystem in order to make Ascension Island more habitable.
如此的和谐仅仅是一个除了系统中除了竞争繁殖别无他求的蛮荒系统中的偶然产物，这样的观点显然让人难以接受。
It is hard to accept that such harmony has arisen as an accidental consequence of a brutal system with no principles beside the one that every individual is striving for reproductive success.
这些深海生态系统为鱼类以及其他生物提供生存，产卵以及繁殖的场所，也保护他们免受强流以及猎食者的袭击。
These deep ecosystems provide shelter, spawning and breeding areas for fishes and other creatures, as well as protection from strong currents and predators.
因此北太平洋海獭的近乎绝灭，导致了海胆的大量繁殖，海胆随后毁掉了迄今维持着自身生态系统的巨藻林。
Thus the near extinction of sea otters in the northern Pacific led to a proliferation of sea urchins, which then laid waste an entire kelp forest that had hitherto sustained its own ecosystem.
他们已经证实，采用这些培养系统可至少维持病毒颗粒复制繁殖2个月，并且这些病毒又能重新感染新的细胞。
Using this system, his group has demonstrated sustained replication and production of virus particles for at least 2 months, with these virus particles able to infect new cells.
这些致病因子使大肠杆菌可以定居于呼吸道或消化道黏膜，大量繁殖并侵入血液循环系统，引起各种疾病的发生。
These virulence factors enable E. coli can be settled in the respiratory or gastrointestinal mucosa, multiply and invade the blood circulatory system, causing various diseases.
该研究为园艺学研究提供了用孢子人工繁殖剑叶凤尾蕨的方法，也为分子生物学、遗传学和蕨类植物系统学研究提供了基础。
This study reveals not only the technique of propagation of P. ensiformis with spores for horticulture but also the proper conditions for molecular biology, genetics and systematics study.
寄生虫迅速转移到肺部藏匿，并在对血液系统进行下一波攻击前成熟并繁殖，它们侵入红血球并再次繁殖，然后侵袭更多的细胞。
Travelling swiftly to the liver, the parasites hide, mature and multiply before staging a grand second act in the bloodstream, where they invade red blood cells, multiply again, and invade more cells.
在方法二的体外培养系统中，在固体和液体培养基上均没有附红细胞体生长与繁殖。
Eperythrozoon suis does not grow on solid and liquid training base or breed in training system of method two in vitro.
通过对这两种结构的比较，说明犁鼻系统的结构差异与鼠类的生活环境和繁殖行为有关。
It is shown that the difference of the structure of vomeronasal system is related with environment and reproduction behavior in rodent.
在炎热的夏季，采用湿帘降温系统是提高公猪繁殖性能的最有效的方法之一。
Inblazing heat summer, adopting the wet curtain cooling system is one of the most valid methods to increase the boar's breed function.
此外，近亲繁殖的父母将此突变集中于后代，掩盖了原本的基因系统。
But inbreeding parents can pool the mutations in offspring, oerwhelming the backup systems.
植物离体器官发生不仅是获得大量无性繁殖植物和进行基因转化的重要途径，而且亦是研究植物发育问题的主要实验系统之一。
Plant organ regeneration has an important role in plant reproduction and genetic engineering, and also provides an experimental system to study molecular mechanism of plant development.
有害藻类的大量繁殖是导致鱼类死亡的常见原因。如果一些动物食用了神经毒素中毒的鱼类，软骨藻酸也会导致这些动物神经系统紊乱甚至死亡。
Harmful algae blooms are a common cause of fish kills. Domoic acid can also cause neurological disorders and death in animals that eat fish poisoned with the neurotoxin.
看看生殖系统，繁殖对物种的生存至关重要。
Look at the reproductive system - reproduction is essential for survival of the species.
在活性污泥系统中，由丝状菌过度繁殖引起的污泥膨胀是最难解决的问题之一。
The bulking sludge caused by the overgrowth of filamentous bacteria is one of the most difficult problems occurred in activated sludge systems.
在活性污泥系统中，由丝状菌过度繁殖引起的污泥膨胀是最难解决的问题之一。
The bulking sludge caused by the overgrowth of filamentous bacteria is one of the most difficult problems occurred in activated sludge systems.
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