单词:ectoparasitic
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This is Scientific American's 60-Second Science. Im Karen Hopkin. Itll just take a minute. When you think about an ecosystem, you usually think of the big animals that live there. The Serengetis ruled by lions. And estuaries are populated by fishes,
Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. Today, since we are a website, we join in celebrations for the 15th birthday of the World Wide Web! The World Wide Web has changed the lifestyle and working environment of people
HEALTH REPORT - Chronic Diseases: The World's Leading KillerBy Cynthia Kirk Broadcast: Wednesday, February 22, 2006 I'm Steve Ember with the VOA Special English Health Report. Chronic diseases are the
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its good to be the Queen. You get fed and cared for and generally treated like royalty. But if youre a blue butterfly caterpillar, you can get the same b
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Shakespeare noted that a worm may eat a king, after that king is dead. Sadly, parasitic worms infect people who are still alive, especially kids. Publi
Fruit flies are pretty small. But they laugh at a species of fly recently discovered in Thailand. Dubbed Euryplatea nanaknihali, this member of the phorid fly family is less than half a millimeter longa fifth the size of a fruit fly. But before you o
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Researchers have developed a long-lasting capsule that, when swallowed, slowly releases medicine into the body. The researchers say the capsule was developed for treatment of the disease malaria. But they believe it could hold medicines for a number
AS IT IS 2015-10-09 Belarus Writer Gets Nobel Literature Prize 白俄罗斯作家获得诺贝尔文学奖 Svetlana Alexievich of Belarus has won the Nobel Prize in Literature. The Nobel Prize committee in Stockholm, Sweden, called her writings a monu
By Carol Pearson Washington, D.C. 26 June 2007 Smallpox was the first infectious disease ever to be eradicated worldwide. But now, thanks to a two-decade campaign, guinea worm disease is about to be eradicated as well. Unlike smallpox, guinea worm di
By Edward Yeranian Beirut 25 September 2007 Lebanon's parliament has failed to attain the required two-thirds quorum to elect the country's next president, forcing a postponement of the electoral session to October 23. Edward Yeranian reports for the
In the third millenium BCE, Mesopotamian kings recorded and interpreted their dreams on wax tablets. 公元前三千年,美索不达米亚国王在蜡质石板上记录并解释了他们的梦。 A thousand years later, Ancient Egyptians wrote a dr
-Howard: One of us, one of us. 入伙万岁!入伙万岁! -Penny: Well, what a thrill. thrill: 激动 多振奋人呀! -Sheldon: You're sitting in my spot. 你坐我位置上了。 -Penny: Oh, jeez, you've got to be kidding me. jeez: 呀 天呀,
How they toiled and sweated to get the hay in! 收割牧草时,他们干得多卖力! But their efforts were rewarded, for the harvest was an even bigger success than they had hoped. 但他们的汗水并没有白流,因为这次丰收比他们先
Jan Andersson from the Nobel Prize Committee in Physiology or Medicine explained why Tu Youyou won the Nobel Prize. Youyou Tu got half of this year's prize for her discovery of Artemisinin, and she did that from an herb, so she was the one who identi
所谓复杂的定语从句,是指一个句子带有两个或两个以上定语从句的结构。这类定语从句在结构上与先行词的关系比较复杂,有如下几种形式: 1.自由式定语从句 自由式定语从句是指一个句子
麦田怪圈不是我们干的。请用心想想吧。我们以你们认为不可能实现的速度飞行于群星间可你们还认为我们需要为了联络用途而压下麦秆?你们为什么还总是以为我们会在荒郊僻野着陆? 我们
有人说过:得句型结构得托福阅读。在这篇文章里,托福小编将为大家介绍一些托福阅读句型的结构,考生在进行托福阅读复习时不妨将这些结构方法运用起来,可以加快托福阅读的复习效率