It is perfectly all right, now and then, for a human to be possessed by the urge to speak, and to speak while others remain silent.
有时候，一个人被说话的冲动所支配，在别人保持沉默的时候说话，这是完全正常的。
A vaccine may also give us passive immunity by providing B cells taken from an animal or a human to play the same role.
疫苗也可以通过提供取自动物或人身上的B细胞来发挥同样的作用，从而使我们获得被动免疫。
Researchers have been determined to figure out how bird flu spreads from human to human worldwide.
研究人员下决心要弄清楚禽流感在全球范围内是如何在人与人之间传播的。
The virus is transmitted to humans by close contact with infected birds or their excrement, and cannot be passed from human to human.
该病毒通过与受感染的鸟类或其粪便的密切接触传播给人类，不能在人与人之间传播。
There is no indication of virus adaptation through transfer from human to pigs at this time.
目前尚无迹象表明病毒通过从人身上转移到猪身上而出现适应性。
So if somebody has it and it is airborne transmitted from human to human, a dinner in a restaurant could spread it.
所以如果某人染病，该病又可以通过空气在人和人之间传播，在饭店吃一顿饭可能都会将该病散播。
After all it is perfectly normal indeed deeply human to be moved when nature presents us with a vision of great beauty.
毕竟，深为自然界呈现给我们的伟大美景而感动完全是正常的、具有深刻人性的事。
Only then, do they remember what it is like to be human to each other and kind, helping each other, no matter one's origin.
只有到这个时候，人们才想起，无论是什么民族，人类之间应该友善、互助。
Just a couple of mutations in birds suffice to actually make a virus hotter, and so make a virus transmissible from human to human.
鸟类病毒的几个突变就足以使一个病毒重新具有杀伤力，并能使之在人群中传播。
For instance, a tag cloud can filter a large set of results to allow a human to instantly recognize certain areas of value in the data.
例如，一个标记能够过滤一大部分结果，使人们立即可以识别出某些区域的数据值。
Virtualization, however, is a little like standardizing the driving controls on automobiles, allowing the same human to operate a wide variety of vehicles.
然而虚拟化有点象驾驶控制汽车标准化，相同的人能开不同的车。
The voice of the institution is never conversational; it can be pedantic or persuasive, but it is never engaged, because there is no singular human to engage.
机构当中的各种声音从来就不健谈；这些声音可能显得书生气也可能说服性十足，但它永远都不投入，因为没有单个的个人能够参与其中。
While this "bird flu" proves deadly to humans, killing more than half of its victims, it is kept in check by its inability to spread readily from human to human.
这“禽流感”证明对人是致死的，感染者一半以上可以被杀死，所幸它在人与人之间传播不易。
Honey is a kind of monosaccharide, which is easy for human to absorb. This is the main reason that sugars and artificial sweeteners are forbidden in honey in our country.
蜂蜜是一种单糖，因而更易被人体吸收，这是国家标准中不允许蜂蜜产品添加糖类和代糖类物质的原因所在。
To date, since the first human to develop antibodies against Ebola Reston was reported in 1989, no significant human illness has been reported in association with Ebola Reston infection.
迄今，自1989年报告第一起人产生对埃博拉·莱斯顿的抗体以来，未曾报告过与埃博拉·莱斯顿感染相关的重大人类疾病。
The announcement in Florida came on the 30th anniversary of the first space shuttle flight and on the 50th anniversary of Soviet cosmonaut Yuri Gagarin becoming the first human to orbit the earth.
最后结果在佛罗里达州宣布，日期是第一次航天飞机飞行30周年以及苏联宇航员尤里·加加林成为绕地球轨道飞行第一人50周年纪念日。
The original quote about human nature went like this: "To err is human, to forgive, divine."
关于人性的原话是这样写的：“犯错是人的行为，而宽恕是神的事情。”
Human-to-human transmission can easily occur, and pandemic will therefore break out.
很容易出现人际传播，而且会因此爆发大流行病。
After visiting Wuhan, Dr. Zhong spoke out frankly about human-to-human transmission and suggested evidence-based prevention.
在武汉之行后，钟南山医生坦率地说出了人际传播的事实，并建议采取循证预防措施。
To ERR is human; to forgive, divine, was the pithy view of Alexander Pope.
是人就会犯错，是神就会宽恕，这是亚历山大·蒲柏观点的精髓。
During the later outbreaks in Bangladesh and India, Nipah virus spread directly from human-to-human through close contact with people's secretions and excretions.
在孟加拉国和印度后来发生的疫情期间，尼帕病毒通过与患者的分泌物和排泄物密切接触直接人传人。
If limited human-to-human transmission has occurred, all evidence at this stage suggests that the chain of transmission ended after a single person was infected.
如果已发生有限的人际传播，这一阶段的所有证据表明，传播链在一人受到感染之后终止。
All prerequisites for the start of a pandemic have therefore been met save one: the establishment of efficient and sustained human-to-human transmission of the virus.
因此，发生大流行的所有前提，只差一个还没有满足：病毒在人与人之间确立有效而持续传播。
Limited human-to-human transmission may occur under some circumstances, for example, when there is close contact between an infected person and an unprotected caregiver.
数量有限的人际传播可能是在一些条件下发生的，例如，受感染者与不加防护的护理者之间密切接触。
This decision was based primarily on epidemiological data demonstrating human-to-human transmission and the ability of the virus to cause community-level outbreaks.
做出这项决定的主要依据是，流行病学资料表明已经发生了人际传播，并且该病毒可在社区层面引发疫情。
Human-to-human transmission of avian flu is rare, but in some cases the virus has passed from poultry to humans.
禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。
Human-to-human transmission of avian flu is rare, but in some cases, the virus has passed from poultry to humans.
禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。
Though rare, instances of limited human-to-human transmission of H5N1 and other avian influenza viruses have occurred in association with outbreaks in poultry and should not be a cause for alarm.
虽然数量很少，H5N1和其它禽流感病毒在人与人之间的有限传播事例毕竟伴随家禽疫情发生了，但这无须惊慌。
Though rare, instances of limited human-to-human transmission of H5N1 and other avian influenza viruses have occurred in association with outbreaks in poultry and should not be a cause for alarm.
虽然数量很少，H5N1和其它禽流感病毒在人与人之间的有限传播事例毕竟伴随家禽疫情发生了，但这无须惊慌。
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