标签：immunity 相关文章
U.S. Condemns Political Violence in Venezuela On August 4, explosives aboard two drones flying near Venezuelan President Nicols Maduro as he spoke in Caracas were detonated. Seven people were injured. Maduro has used the incident as a pretext to crac
VOA标准英语2018年(八月)
Support for NPR Podcasts comes from Northwestern Mutual, the quiet company, committed to building lifelong relationships in communities and protecting financial futures. From NPR News in Washington, I'm Paul Brown. Police and Northern Illinois Unive
2008年NPR美国国家公共电台二月
Top 5 Songs for Week Ending Feb. 10 We're soaring with the five most popular songs in the Billboard Hot 100 Pop Singles chart, for the week ending February 10, 2018. This is a rare week. Not only do we get a new No. 1 single, it's also the Hot Shot D
VOA标准英语2018年(二月)
There is anger in the Coalition at attempt to destabilize Malcolm Turnbull's leadership. Shadow Treasurer Joe Hockey yesterday revealed he'd been approached to replace Mr. Turnbull. But he says he remains loyal. Opposition to Mr. Turnbull's leadershi
澳洲ABC新闻快递2009年
Bushfire is still burning out of control near the West Australian town of Margaret River. At least 20 homes have been destroyed, more than 50 people have been evacuated. Firefighters are struggling to control the blaze, which started from a controlle
澳洲ABC新闻快递2011年
American Amanda Knox and her former boyfriend have been freed after an Italian court quashed a murder conviction against them. The pair had been found guilty of killing British student Meredith Kercher in 2007. Now the court ruled critical DNA eviden
澳洲ABC新闻快递2011年
Israel and Hamas have stepped back from the brink of war this morning. A ceasefire was declared, an hour and a half ago, after a week of bloodshed, the truce was announced by Egypt's foreign minister at a Cairo news conference with the U.S Secretary
澳洲ABC新闻快递2012年
Ladybugs love to snack and feast on other pests, so people began importing in Asian species called hollyqueen ladybugs as natural pest control. But in their new environments the hollyqueens wiped out native ladybugs and they have their parasites to t
Scientific American(五)月
Idiom: Miss the boat 坐失良机 Hit the book: Document Unscripted Highlight Conflict Eliminate Premise Eviction Reality-based television is a genre of television programming that documents unscripted situations and actual occurrences, and often fea
趣味青春英语
Baby's Bacteria Related to Birth Method 出生方式决定婴儿携带什么样的细菌 Each of us harbors a unique collection of bacteria, on our outsides and our insides. Now, scientists are finding that the bacteria you get at birth may depend on
初学者听力文摘精选
A dream of immortality 成为不朽的梦想 It is only too easy to consider yourself immortal after you have imbibed rather too freely. This is the cautionary tale of jimmy anderson. Anderson started out on his alcoholic binges at quite an early age. Almo
胡敏托福词汇记单词
Remarks of President Barack Obama Weekly Address Saturday, May 2, 2009 Over the last week, my administration has taken several precautions to address the challenge posed by the 2009 H1N1 flu virus. Today, Id like to take a few minutes to explain why
美国总统每日发言
Public health officials in San Francisco, and leaders from its large Asian community, are mounting an aggressive campaign to eradicate hepatitis B from the city. They say demographics are largely responsible for San Francisco having the highest conce
VOA标准英语2010年(七)月
RotavirusImmunizationProtectsPeopleWhoDon'tGetVaccine Rotavirus causes severe diarrhea that kills more than a half-million people each year, mostly very young children. A recently-introduced vaccine has proved to be very effective and has shown some
VOA标准英语2011年(九月)
The global health organization that works to combat pneumonia in children says the lung disease is the single leading killer of young children in the world, more than HIV/AIDS, malaria and tuberculosis. The Global Coalition Against Child Pneumonia sa
VOA标准英语2010年(十一)月
Aides to Ukrainian presidential candidate Yulia Tymoshenko say she is planning a legal challenge to Sunday's presidential election results, which showed a victory for former Prime Minister Viktor Yanukovych. In any case, the new president will assume
VOA标准英语2010年(二月)
High-Tech Device Reduces Risk of Hospital Infections This machine fires bursts of ultraviolet, or UV, light that penetrate the cells of micro-organisms and kill them. The organisms have no chance to adapt and gain immunity as they might with a chemic
VOA标准英语2012年(二月)
Is it feed a fever, starve a cold? or vice versa. Yael and Don try to clear that up on this Moment of Science. Y: Don, have you heard the saying, feed a fever, starve a cold? D: Sure. But, it's starve a fever, feed a cold. Why? Are you sick? Y: No. S
英语时差8，16
In Congo, Ebola claims the lives of 60 percent of those who get the virus. The disease is so devastating, even those who survive it are shunned. Really makes it frightening is the high mortality rate, the very severe symptoms that people experience.
VOA标准英语2019年(二月)
台湾籍旅美老师今天交给我们的句子是： Stress hormones increase inflammation in the body, suppress the immune system, which make you more susceptible to infection by acne-causing bacteria, and can even increase oil-production in the s
留美老师带你每日说英文