单词：bacteria-laden
单词：bacteria-laden 相关文章
Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are u
新概念优美背诵短文50篇
Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo
新东方背诵文选
A new study into the hygiene of supermarkets has found that shopping carts are dirtier than the stores bathrooms. Microbiologist Dr Charles Gerba of the University of Arizona conducted research on the handles of 85 carts in four American states. He r
创新英语
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Sometimes a bit of bacteria can be just what the doctor ordered. If you prize yogurt for its active cultures, you know what Im talking about. Now a new s
Scientific American(九)月
They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba
Scientific American(三)月
This is the VOA Special English Health Report. Tuberculosis killed one million three hundred thousand people around the world in two thousand seven. In addition, almost half a million people who were infected with tuberculosis and with H.I.V. also di
2010年慢速英语(三)月
By Ruth Reader Washington, DC 13 February 2008 There is growing concern around the world over illnesses caused by new antibiotic-resistant bacteria, or so-called superbugs, and the decreasing effectiveness of antibiotics to treat infections. Earlier
VOA常速英语2008年（二月）
HEALTH REPORT -August 7, 2002: Bacteria in Food This is the VOA Special English Health Report. An American food company recently recalled about eight-million kilograms of ground beef that is used to m
健康与环境
HealthReport-GutBacteria:WeAreWhatWeEat This is the VOA Special English Health Report. The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are expl
2011年VOA慢速英语(九)月
Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr
2015年VOA慢速英语(七)月
E coli: Good Bacteria Gone Bad As a major outbreak of a highly toxic strain of E. coli bacteria continues to sicken residents of Europe, medical experts are racing to find the source. E. coli doesn't usually cause any trouble, says University of Minn
VOA标准英语2011年(六月)
DAVID GREENE, HOST: For the first time, scientists have figured out just how many tiny critters are living inside your kitchen sponge. Now, don't fear. NPR's Michaeleen Doucleff says there is something you can do about this. MICHAELEEN DOUCLEFF, BYLI
2017年NPR美国国家公共电台9月
An Islamic website says it will issue a new video message from al-Qaida leader Osama bin Laden , marking the sixth anniversary of the September 11 attacks. The web site posted an image of bin Laden on a banner, saying the new video is reminiscent of
英语新闻视频
Cigarettes Are Bacteria Sticks, Too A study in the journal Environmental Health Perspectives finds that cigarettes harbor various species of bacteria, some of which cause disease. Karen Hopkin reports This January, the country Turkey will join a hand
60秒科学
By Scott Stearns White House 09 October 2007 The White House says it is concerned by the leak of a private security firm's eavesdropping on al-Qaida communications. VOA White House Correspondent Scott Stearns reports, the company's chief says the dis
2007年VOA常速英语（十月）
By Ravi Khanna Washington 12 December 2007 More than six years after the terrorist attacks on the United States, and billions of dollars spent and thousands of lives lost in the war on terror, two questions in particular go unanswered in the public m
VOA常速英语2007年（十二月）
By Paula Wolfson Sydney 08 September 2007 President Bush in Sydney President Bush says the release of a new video by al-Qaida leader Osama bin Laden is a vivid reminder of the dangers still facing the world. VOA's Paula Wolfson reports from Sydney, w
2007年VOA标准英语（九月）
European and World Health Organization scientists say a deadly outbreak of E. coli bacteria that has killed 18 people is a rare and virulent(致命的) strain of the bacteria. The latest victim died Wednesday night in Germany. The United Nations agen
英语新闻
BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac
英语新闻
48 Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bac
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