Kangaroos harbour a vast range of parasites.
袋鼠身上有各种各样的寄生虫。
These symptoms may be referable to virus infection rather than parasites.
这些症状也许是由病毒感染引起的，而与寄生虫无关。
Parasites are usually smaller than their hosts.
寄生虫通常比它们的宿主小。
Natural selection favors the parasites that are best able to find and feed on hosts.
自然选择偏爱那些最容易找到寄主并以之为食的寄生虫。
In nature, itching and scratching help animals get rid of parasites, plant material, or other unwanted baggage.
事实上，骚痒和抓挠帮助动物去掉寄生虫、植物体或其它不想要的垃圾。
Animals have parasites or carry a variety of viruses. Once transmitted to humans, it would be a very troublesome thing.
动物有寄生虫或携带各种各样的病毒。一旦传染给人类，这将会是非常麻烦的事。
Males that are more susceptible to disease and parasites will have to use their carotenoids to boost their immune systems.
那些更容易感染疾病和寄生虫的男性将不得不使用他们的类胡萝卜素来增强他们的免疫系统。
It's possible that the cleanest and most highly evolved creatures where this topic is concerned are internal parasites, along with bee, wasp and ant larvae.
在这个话题中，最干净、最高度进化的生物可能是体内寄生虫，以及蜜蜂、黄蜂和蚂蚁幼虫。
Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins.
实验室测试表明，这些千足虫体内的分泌物富含两种化学物质，这两种物质是有效的驱蚊剂，而蚊子携带的寄生虫会削弱卷尾猴的能力。
CIBC is also perfecting the technique for breeding parasites that prey on "disapene scale" insects.
CIBC还在完善培育寄生虫的技术，这些寄生虫以“disapene scale”昆虫为食。
Two parasites Ancylostoma duodenale and Necator americanus cause hookworm disease.
两种寄生虫为十二指肠钩虫和美洲轮虫引起钩虫病。
Artemisinin is also a promising potent drug in the treatment of cancer, human parasites such as pneumocystosis.
青蒿素还是一种有前途的有效药物，可用于治疗癌症，人类寄生虫，如肺囊虫病。
Iit can be used to against hook worms, roundworm, pinworm, whipworm, Strongyloides stercoralis and other intestinal parasites.
它可用于防治勾虫、蛔虫、蛲虫、鞭虫、粪类圆线虫等肠道寄生虫病。
A: Malaria is caused by parasites.
答：疟疾是由寄生虫引起的。
Malaria is caused by Plasmodium parasites.
疟疾是由疟原虫属寄生虫所致。
Boiling water kills harmful bacteria and parasites.
沸水杀死有害细菌和寄生虫。
The parasites evolved, for example, in separate hosts.
例如寄生虫都是在不同的寄主身上进化的。
Malaria is caused by parasites that are transmitted by mosquitoes.
疟疾是由蚊虫传播的寄生虫导致的。
They're just parasite hotels, even their parasites have parasites.
它们就是寄生虫的“酒店”，甚至它们的寄生虫也有寄生虫。
Once a bird fledges, therefore, it leaves its parasites behind.
因此，一旦鸟长出羽毛，鸡蚤就离开了。
Other potentialfactors include bloodsucking parasites and infections.
造成蜜蜂死亡的其它潜在因素包括吸血寄生虫和感染。
The parasites concerned are protozoa belonging to the Trypanosoma genus.
涉及的寄生虫是一种原生动物，归类为锥虫属。
The life cycle of Plasmodium parasites is known to depend on temperature.
已知疟原虫的生命史依赖于温度。
Such trends may not have any relevance to the malaria parasites that infect humans.
这个趋势跟传染人类的疟疾寄生虫无关。
Some argue that the absence of parasites is leading to hypersensitive immune systems.
有些理论认为少了寄生虫的寄生便导致了免疫系统的超敏反应。
Wolbachia bacteria are widespread parasites, infecting both insects and nematode worms.
沃尔·巴克氏体细菌广泛传播寄生虫，感染昆虫和线虫。
This can be done – the majority of humanity can cast off the tiny minority of parasites.
这是可以做到的，因为人类中占绝大多的群体有能力抛弃那些极少数的寄生虫。
The parasites can cause malnutrition and SAP a child's ability to grow, thrive and learn.
这些寄生虫可引起营养不良，削弱儿童的发育、成长及学习能力。
The parasites can cause malnutrition and SAP a child's ability to grow, thrive and learn.
这些寄生虫可引起营养不良，削弱儿童的发育、成长及学习能力。
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