If no people clean streets and take the rubbish away, terrible diseases will soon appear and spread easily.
如果没有人打扫街道，把垃圾带走，可怕的疾病很快就会出现并且很容易传播。
Does the virus spread easily from birds to humans?
病毒是否很容易从禽传播到人？
They are always in liquid form and they spread easily by hand or with a polisher.
他们通常是液态，不论是用手还是抛光机都很容易上。
pests and disease can spread easily, creating the need for potentially toxic pesticides.
草原变得只生长一种作物。 病虫害容易扩散，将增加使用有潜在毒性杀虫剂的需要。
All available evidence indicates that the virus does not spread easily from poultry to humans.
所有可得证据表明，病毒不容易从家禽传染给人类。
We can use this special oil to reduce the thick paint to a liquid thin enough to spread easily .
我们可以使用这种特殊的油将浓油漆稀释一下，使它刷起来比较省力。
There is still no evidence that the virus has mutated to spread easily between humans, he says.
他说现在还没有证据表明，病毒发生了突变而可以在人类之间传播。
It is not sprEad Easily, but thE virus can survivE for long pEriods outsidE thE body (E. g., in bEdding).
天花不易传播，但是病毒可长期存活于体外(如床上)。
However, all evidence to date indicates that the H5N1 virus does not spread easily from birds to infect humans.
然而，迄今所有的证据表明，H5N1病毒不容易从鸟类传播感染人类。
Where only one crop is grown, pests and disease can spread easily, creating the need for potentially toxic pesticides.
草原变得只生长一种作物。病虫害容易扩散，将增加使用有潜在毒性杀虫剂的需要。
Many experts worry that the virus could kill large Numbers worldwide if it starts to spread easily from person to person.
许多专家开始担忧，如果禽流感病毒能随意在人群传播的话，那么禽流感将夺取许多人的生命。
Sweet potatoes usually are grown in loose sandy soil. This permits the roots to spread easily. It produces more tubers.
甘薯通常种植在疏松的砂质土里。这使根系容易蔓延，结薯更多。
Absract: Endocrine-disruptors are able to spread easily in water and do harm to aquatic animals through multiple approaches.
内分泌干扰物在水体中传播便捷，通过多种途径对水生生物造成危害。
When the ferrets were in close contact with each other, they were exposed to enough virus particles that infection spread easily.
当雪貂紧密接触时，它们就暴露在足量的病毒颗粒中，感染也容易传播。
Stay away from small children who spend their days in group environments like daycare or school; germs spread easily in these environments.
远离接受日间住院治疗或在学校的儿童所处的环境；病菌很容易在这些环境中传播。
Although all evidence to date indicates that the virus does not spread easily from birds to humans, careful monitoring of the situation is warranted.
虽然迄今所有证据表明该病毒不会容易地从禽类传播给人类，但是有理由对事态进行仔细监测。
And even among the animals, the virus does not appear to spread easily, which may further suggest that pets are not ideal reservoirs for influenza.
即使在动物中，流感病毒似乎也不容易传播，提示我们宠物可能不是流感病毒理想的宿主。
The reason H5N1, which first cropped up in humans in 1997, has never given rise to a pandemic is that the virus does not appear to spread easily among people.
H5N1于1997年首次感染人类，但没有升级为全球大流行，原因在于H5N1不易在人际间传播。
The researchers started from the premise that densely populated cities would be good places for infectious diseases, which could spread easily from person to person.
研究人员以人口密集城市可能是传染病的易发地区为假定开始研究，在人口密集的城市中，疾病将轻易的在人与人之间互相传播。
Internal Medicine expert, Dr Meenakshi Jain of Max Hospital says, "One reason could be because people are likely to stay indoors, so the virus can spread easily."
麦克斯医院的内科专家米纳克什•杰恩博士说：“其中一个原因可能是，冬季人们多在室内活动，因此病毒容易传播。
Slums are productive breeding grounds for tuberculosis, hepatitis, dengue, pneumonia, cholera, and diarrhoeal diseases that spread easily in highly concentrated populations.
贫民窟是结核病、肝炎、登革热、肺炎、霍乱和腹泻病的繁殖场所，这些疾病在高度集中的人群中很容易传播。
The key difference in this study was the presence of a single gene from the H3N2 human virus: the PB2 protein, which gave the hybrid viruses the ability to spread easily among the lab mice.
这项研究中一个关键的不同点就是H3N2人类流感病毒中存在一个蛋白基因：PB2蛋白，它的存在使得杂交病毒具有了在实验小鼠之间轻易传染的能力。
If your friends and family get fat, chances are you will too, researchers report in a new study that suggests obesity is "socially contagious" and can spread easily from person to person.
如果你的朋友和家人发胖了，你也得小心了！一项最新研究表明，肥胖具有“社会传染性”，很容易在人与人之间传播。
Over time, an avian virus may gather enough genetic change to spread easily, as experts believe was the case with the 1918 Spanish flu, an event that killed at least 30 million people worldwide.
随着时间的推移，发生足够的变异后的禽流感病毒广泛传播，就像1918年发生的那场夺去了至少3千万人生命的西班牙流感那样。
To drink they must spread their legs in an uncomfortable position, which makes them easily hunted by other animals like Africa's big cats.
为了喝水，它们必须以一种不舒服的姿势张开腿，这让它们很容易被其他动物猎杀，比如非洲的大型猫科动物。
According to Live Science, bats can fly and spread viruses farther and more easily than other animals.
据《生活科学》报道，蝙蝠可以飞行，比其他动物更远地、更容易地传播病毒。
According to Live Science, bats can fly and spread viruses farther and more easily than other animals.
据《生活科学》报道，蝙蝠可以飞行，比其他动物更远地、更容易地传播病毒。
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