单词：nitrobacteriaceaes
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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
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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
By Robert Berger Jerusalem 15 September 2006 UNIFIL Spanish soldier holding M60 machine gun stands guard near navy divers as Lebanese boy looks on More international troops are arriving in Lebanon to enforce the one-month-old ceasefire between Israe
2006年VOA标准英语（九月）
分集介绍：导数，商数，正弦和余弦 Derivatives.of.products.quotients.sine.cosine
麻省理工学院公开课：单变量微积分
分集介绍：导数，斜率，速度与变化率 Derivatives.slope.velocity.rate.of.change
麻省理工学院公开课：单变量微积分
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）
[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Silly Sausage是Nitrome于2011年5月28日发行的一款益智类游戏，它是以香肠在尽量不碰到其它损失生命物体的情况下吃光所有的钻石再到达终点为标
英语对接游戏
By Stephanie Ho Washington 23 July 2006 Lebanese Prime Minister Fouad Siniora says Israeli bombing of Hezbollah targets in Lebanon is forcing his country to its knees. In a television interview, the Lebanese leader said the first crucial step toward
2006年VOA标准英语（七月）
Health Report - Designing an Alternative to Antibiotics This is the VOA Special English Health Report. In nineteen twenty-eight a British scientist made a chance observation. He noticed that some mold had grown in bacteria in a culture plate in his l
2012年VOA慢速英语(八)月
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
Somalia's Ethiopia-backed transitional government has agreed on a date for the withdrawal of Ethiopian troops from two major Somali cities in a new cease-fire deal between the government and an opposition faction. But VOA Correspondent Alisha Ryu in
VOA标准英语2008年（十月）
African Union Commission Chairman Jean Ping has opened an international conference on Libya with a call for an immediate end to hostilities and dialogue between the Gadhafi government and rebels. But a hoped-for appearance by a Libyan rebel represent
VOA标准英语2011年(三月)
HEALTH REPORT - New Heart Drug Shows Promise in African Americans By Cynthia Kirk Broadcast: Wednesday, November 17, 2004 This is Bob Doughty with the VOA Special English Health Report. Heart failure
健康与经济
Russia and Georgia have signed a European-mediated ceasefire agreement, but each side continues to accuse the other of violating the terms. As VOA's Sonja Pace reports from London, efforts now are on diplomacy to end the fighting, but the conflict's
VOA标准英语2008年（八月）
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
By Suzanne Presto Irbil 10 May 2008 Spokesmen for the Iraqi government and the movement of radical Shi'ite cleric Moqtada al-Sadr say the two sides agreed to a truce Saturday to end weeks of fighting in Baghdad's Sadr City. Hundreds of people have be
VOA标准英语2008年（五月）
Today we go on a journey. It starts in Sweden over 100 years ago; and then moves to London; and finally moves to future worlds and other planets. But we start in Sweden. Alfred Nobel spent his life finding ways to blow things up. He was born in 1833
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