Although natural hosts are birds, the avian influenza viruses are known to cross species barriers to infect other mammals, including humans.
尽管鸟类是自然宿主，但禽流感病毒能够跨物种感染其它哺乳动物包括人类。
However, the "flu" virus usually develops different variants that are specialized for each species of animal that they infect. Cross species infections are rare.
但是，流感病毒通常是针对不同种类的动物滋生出不同的变种病毒，跨物种传染的情况很少。
If we are to truly understand how much our cognitive lives differ cross-culturally, we must continually explore the depths of our species' linguistic diversity.
如果我们要真正了解在不同文化中我们的认知生活有多大的差异，我们就必须不断探索我们物种语言多样性的深度。
Avian flu is not only particularly virulent; italso has the rare capacity to cross barriers between species. But it is hard totransmit.
这种传染病不但致命，而且少有地能跨物种传播，但其传染性有限，禽肉只要充分加热，便不具危险。
Some of these AI viruses have also been reported to cross the species barrier and cause disease or subclinical infections in humans and other mammals.
也有报告称，某些禽流感病毒跨越物种界限传播，并导致人类和其他哺乳动物患病或亚临床感染。
Vinifera has been honed into hundreds of varieties, red and white; but the grapes are all still members of the same species, with limited cross-breeding between different varieties.
欧亚葡萄已经被培养出几百个变种，或红或白；但是这些葡萄跟其他品种的葡萄杂交的几率非常的小，所以它们仍然属于同一种类。
Cross-pollination isn't ensured when an ant picks up pollen off a pancake plant: The ant may then crawl to the ground or another species.
蚂蚁从花朵中收获花粉时并不能保证一定可以产生异花授粉的效果：蚂蚁会爬到地面或其他植株上。
And not only human genomes. Cross-species comparisons are enormously valuable.
除了人类的基因组，交叉物种的对比同样有巨大的价值。
Virologists brought in to hunt down the Sars virus always suspected that it had lingered in farmyard or domestic animals before making the cross-species jump into humans.
找寻非典病毒的病毒学家们早就怀疑，该病毒在传染给人类之前就已在农场和家畜中存在了。
These results showed that there existed the cross antigens in serum and body surface slime among various fish species, which corresponded with their relationship to each other.
所有这些表明，不同鱼种的血清和体表粘液蛋白分子存在与亲缘程度相应的交叉抗原。
Wide cross was an effective method creating new species, new germplasm and transfering exogenous gene, it had important significance in theories and practices.
远缘杂交是创造新物种、新种质以及转移异源遗传物质的有效途径，在理论和实践上都具有重要意义。
It is discovered that under proper condition, the disease would die out without the cross-infection for both species.
揭示了当两种群共存但无疾病交叉传染时，在一定条件下疾病就会消亡的规律。
A common genus antigen can be detected in disrupted virions of all species, but most species show no serological cross reactions.
各病毒内部有共同的属特异性抗原，但大多数病毒表面蛋白无血清学交叉反应。
Artificial inducement of flowering is an ideal research system of cross-breeding and flowering bio-physiology for some species with bad-induced flowering, which has proved successful in 10 species.
开花人工诱导对难开花的竹子来说是杂交育种和开花生理生化研究的理想研究系统，在10个竹种中诱导成功；
They said it would have protected the habitat of endangered species only on federal lands, and would have applied only to those species that do not cross any borders.
他们说，它将只保护联邦直接管辖的土地上的濒危物种栖息地，而且这种保护只限于那些不跨过任何边界的物种。
It is discovered that under proper condition, when the two species coexist and a disease persists in both of them, if the cross-infection is removed, the disease would die out.
结论表明，当两种群共存且均有疾病流行时，如切断疾病交叉传染因素，在一定条件下，疾病均会消亡。
The collision cross-section are related to ions species and flux.
该截面值与离子种类和离子的束流密度密切相关。
The comparative analysis of genomic evolution between closely or distantly related species has been analyzed by a genomic DNA cross-hybridized with other species.
用一种植物的总基因组dna与近缘或远缘物种的染色体杂交，可以研究植物近缘或远缘物种基因组进化关系。
The "yuck" factor that cross-species transplants would probably provoke would surely fade if lives were saved.
如果生命能够被挽救的话，物种间移植可能挑起的反对因素肯定会减退。
The wild grapes whose origin of species in China are not only resistant to diseases but also easy to cross with V. vinifera.
中国葡萄属野生种抗病性强，与欧亚种无核品种杂交亲合性强。
Meantime, serovartype-specific antibody could not be detected by ELISA with type-specific antigen, the cross-reaction might be due to the presence of homogeneous antigens among UU species.
用ELISA不能检出型特异性抗体，这种交叉反应可能是由于在解脲支原体中有同源性抗原存在。
Meantime, serovartype-specific antibody could not be detected by ELISA with type-specific antigen, the cross-reaction might be due to the presence of homogeneous antigens among UU species.
用ELISA不能检出型特异性抗体，这种交叉反应可能是由于在解脲支原体中有同源性抗原存在。
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