单词:methyl viologen
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This is the second in a two-part Business English Podcast series on discussing previous experience in workplace English job interviews. It is one of an ongoing sequence of ESL podcasts that covers the whole interview process. In the first part of thi
This is the first in a two-part Business English Podcast series on talking about your previous experience. It is one of a longer sequence of podcasts that will focus on the complete job interview process. When you sit down to start a job interview, m
After 'Gen X', Today's Young Might be Gen E Americans like to give names to generations. We call those who lived through World War II, the Greatest Generation; those who came of age reading the beatnik poets of the 1950s, the Beat Generation; those f
AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a
Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting
You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t
Stomach Cells Happier with Dark Roast Coffee Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to research presented
M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物(舞茸提取物) Malonyl Oleanolic acid Hemi
AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals
By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the
The Obama administration is ratcheting-up its expressions of concern about the situation in Iran, given new reports of government-inspired violence against election protesters. A suspected member of a pro- government militia (C) beats people at a ra
Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长
By Lisa Schlein Geneva 30 October 2007 The U.N. refugee agency says a weekend of violence in Mogadishu has set off another wave of displacement from the war-torn capital of Somalia. It says an estimated 36,000 people have fled their homes and more ar
Body Clock Provides Clues to Aging 生物钟提供衰老的线索 If youre searching for the fountain of youth, you might find it in your DNA. Thats according to a new study that sheds light on the biological clock ticking in our genomes, why our bod
By Al Pessin Washington 04 December 2007 The commander of NATO forces says U.S. and French units have been moved to a key outpost in Kosovo to help prevent violence in what he calls the most volatile region the alliance is dealing with. But the offic
The top American military commander in Afghanistan says he needs more troops and economic aid as soon as possible for the battle against insurgents that is getting more violent. VOA correspondent Meredith Buel has details. Army Gen. David D. McKiern
By Scott Stearns Washington 17 February 2008 President Bush says he will work with allies to ensure there is no violence surrounding Kosovo's expected declaration of independence from Serbia. VOA White House Correspondent Scott Stearns reports the mo
By Steve Herman Kathmandu 09 April 2008 The most prominent international observer for Thursday's election in Nepal, former U.S. President Jimmy Carter, has told VOA News that incidents of serious violence, including seven deaths, do not appear to be
By Nick Wadhams Nairobi 01 January 2008 A mob set fire to a church in western Kenya Tuesday, killing about 30 people inside who were seeking refuge from widespread post-election violence. Witnesses say the fire was set by a gang of young men who pour