单词：methyl mercaptan
单词：methyl mercaptan 相关文章
Sorry,thereisnottexttemporarily,Pleasehelptingroomtolookforit! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! 汪培珽分级书单（MP3+绘本） TOP50初级英文绘本
粉红猪小妹第二季
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
2016年VOA慢速英语(十)月
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
Scientific American(六)月
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
Scientific American(三)月
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
初学者听力文摘精选
This monument to Islamic heritage is getting a new lease on life. The Bou Inania Medersa or Koranic school was once an architectural jewel of the medieval city of Fes. But centuries of neglect have taken a toll. Restorers are cleaning layers of white
国家地理2007年
It is early evening and soon this amphitheater will be standing room only for the evening show. Bats, hundreds of thousands of Mexican Free-tailed bats, are hungry tornado that swirls out of New Mexico's Carlsbad Caverns each night in search of food.
国家地理2007年
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
60秒科学
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
医务英语
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
农业与发展
You know,it's pure luck. Ever heard of a bullet-proof BlackBerry? The smartphone is usually used to make a phone call,check e-mail or do some social networking. But this BlackBerry Curve, literally stopped the bullet. I checked,there's no ad for that
万花筒2010年
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
VOA2003（下）-环境与健康
Car accidents are the number one killer of teenagers in the United States. Government data show that every year over 4,000 teens lose their lives in collisions that are caused mostly by distracted drivng - a term that includes everything from having
VOA标准英语2010年(六)月
A: Can you tell me where it hurts? B: I am so glad they called you. It feels like something is really wrong with my stomach! A: Does it hurt when I push here? B: Its mostly on my right side. Right here! A: Have you been feeling this way for awhile? B
英语情景对话-健康
PEOPLE IN AMERICA -June 30, 2002: Lou Gehrig By Jeri Watson ANNCR: Now, the VOA Special English program, PEOPLE IN AMERICA. A North American Major League baseball record was established in Nineteen-Th
People in America
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
经济学人科技系列
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
VOA常速英语2013年(十月)
Halloween Comes to AmericaAs European immigrants came to America, they brought their varied Halloween customs with them. Because of the rigid Protestant belief systems that characterized early New England, celebration of Halloween in colonial times w
英美文化
An astronomer used to walk out every night to gaze upon the stars．It happened one night that，as he was wandering in the outskirts of the city，with his whole thoughts rapt up in the skies，he fell into a well．On his holloaing and calling out，
趣味英语