单词:bacterial discolo(u)ration
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[00:00.00]在线英语听力室( www.tingroom.com )友情制作 [00:05.20]1995 [00:07.51]Sleep is divided into periods of so-called REM sleep, [00:11.56]characterized by rapid eye movements and dreaming, [00:14.68]and longer periods of non-REM sleep. [00:17.50
Michael采用老犯人Charles的计策,递交过敏体质的人权申诉。监狱长和Michael一起搭建泰姬陵模型时,谈到这个用拖延时间来避免被转走的策略。 [00:07.49]Listen and Share [00:41.56]Michael [00:42.98]Charles [00:47.97]Michael [00:58.79]How are those allergies? [
By Paul Thompson VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Doug Johnson with the VOA Special English program EXPLORATIONS. Today we tell about some of the important space news of the past
STEVE INSKEEP, HOST: Some new parents have started giving their newborns what's being called a bacterial baptism. The idea is to try to help their babies develop healthy microbiomes, the collection of friendly bacteria that inhabit everyone's bodies.
This is Scientific Americans 60-second Science. I'm Adam Hinterthuer. Got a minute? The Komodo dragon is the largest living lizard and a fearsome predator. It has long been thought that some of its hunting prowess was due to a mouth teeming with bact
The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an
EXPLORATIONS – July 3, 2002: Life on the International Space Station By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLO
VOICE ONE: Im Shirley Griffith. VOICE TWO: And Im Steve Ember with Explorations in VOA Special English. Today, we travel through city streets all over the world to explore street art, a popular and lively art movement. (MUSIC) VOICE ONE: Street art
Explorations - Travel Industry, Fisheries Depend on Threatened Coral Reefs MARIO RITTER: Welcome to Explorations in VOA Special English. Im Mario Ritter. This week, we hear from a prize-winning expert on bees. May Berenbaum has studied ways to help p
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
By Melinda Smith Washington, D.C. 21 March 2007 watch Tuberculosis US report Beginning around 1995, the United States experienced a steady decline in the rate of tuberculosis. But in the last three years, health experts have noticed something distur
South Sudan's Aid Workers Concerned About Flood of Sudanese Refugees At a watering point in Yusuf Batil camp in South Sudan, some of the 35,000 residents make the daily trek to fill jerry cans for washing, cooking and cleaning. To get about half the
Former Ghana President to Lead Global Fight Against Tropical Diseases It is truly an honor to declare my acceptance for the position just offered to me, he said. Former President Kufuor will now be the lead advocate for controlling and eliminating so
Most rice grows in wet environments, but too much water can be disastrous for rice crops. Plant biologist Pamela Ronald helped create a type of flood-resistant rice that is being introduced to India and Bangladesh. In Davis, California, we spoke wit
Gas,OilExplorationComplicatesTurkey,CyprusTalks Cyprus appears to be headed for a showdown with Turkey over Nicosia's oil and gas exploration in the eastern Mediterranean. The drilling may harm the ongoing reunification talks. Relations between Turke
NASA Art Captures 50 Years of Exploration One of the nation's most prolific art collectors is the U.S. space agency. For nearly a half-century, NASA has commissioned artists to document its missions and projects. Seventy of the 3,000 works in its col
Global Trade Carries Risk of Pests More than one trillion dollars worth of agricultural products is traded every year. But as countries buy and sell fruits, vegetables, timber and other products, they also may be putting domestic plants at risk. That
Flatulence, or passing gas, is a normal daily phenomenon. 胀气,或者放屁,是正常的日常现象。 Most individuals, yes, that includes you, 大多数人,是的,这包括你, will make anywhere from 500-1500 milliliters of gas and ca