丁酸;酪酸

When you call someone but they arent there, often their voicemail picks up or answers the phone. Then you have to leave a message. Anyone who uses the phone in their job has to deal with voicemail. Have you ever started to leave a message on someones

发表于:2018-12-05 / 阅读(164) / 评论(0) 分类 商务电话英语

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(119) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

发表于:2018-12-24 / 阅读(97) / 评论(0) 分类 Scientific American(四)月

Pete is schizophrenic. About one percent of people are schizophrenic. Schizophrenia is a mental condition. Its cause is unknown. There is no cure. Drugs can help a person live with the condition. But these drugs have side effects. Schizophrenia usual

发表于:2019-01-02 / 阅读(119) / 评论(0) 分类 原版英语小短文

AGRICULTURE REPORT - Legumes: Good for People and SoilBy Bob Bowen Broadcast: Tuesday, February 21, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Many different kinds of plants

发表于:2019-01-02 / 阅读(88) / 评论(0) 分类 2006年慢速英语(二)月

From VOA Learning English, this is the Health Lifestyle report. Nearly 790 million people around the world do not get enough to eat. Most of them live in developing countries. Many parts of the developing world do not have transportation systems in p

发表于:2019-01-02 / 阅读(151) / 评论(0) 分类 2017年VOA慢速英语(六)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi

发表于:2019-01-08 / 阅读(112) / 评论(0) 分类 Scientific American(十)月

The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(九)月

By Ron Corben Bangkok 23 June 2006 Foreign ministers attending a meeting of the Organization of the Islamic Conference have raised concerns over continuing violence in Thailand's largely southern Muslim provinces. The Thai government has responded t

发表于:2019-01-13 / 阅读(170) / 评论(0) 分类 2006年VOA标准英语(六月)

If you sucked all of the moisture out of your brain and broke it down to its constituent nutritional content, what would it look like? 如果将你大脑里所有的水分都吸干,然后按不同的营养成分进行分类,会是怎样呢? Mos

发表于:2019-01-17 / 阅读(131) / 评论(0) 分类 TED演讲教育篇

Olive oil is 100% fat; there's nothing else in it. 橄榄油含有100%的脂肪,除此之外没有别的。 Pancake mix, on the other hand, is only about 11% fat. 相反,煎饼只有约11%的脂肪。 And, yet, olive oil is good for you, and panc

发表于:2019-01-17 / 阅读(110) / 评论(0) 分类 TED演讲教育篇

AGRICULTURE REPORT - Scientists Clone Pigs to Make Omega-3 Fatty AcidsBy Mario Ritter Broadcast: Tuesday, April 04, 2006 I'm Faith Lapidus with the VOA Special English Agriculture Report. Scientists s

发表于:2019-01-30 / 阅读(117) / 评论(0) 分类 2006年慢速英语(四)月

By Benjamin Sand Islamabad 16 June 2007 A senior U.S. official in Pakistan provided the strongest indication yet that Washington will stand by embattled Pakistan leader Pervez Musharraf. U.S. Deputy Secretary of State John Negroponte, in Pakistan for

发表于:2019-02-03 / 阅读(139) / 评论(0) 分类 2007年VOA标准英语(六月)

By Dan Robinson Washington 15 June 2007 As debate continues over Iraq, U.S. lawmakers have heard from a number of voices including U.S. military officials, and current and former U.S. and Iraqi diplomats. VOA's Dan Robinson was present during many of

发表于:2019-02-06 / 阅读(201) / 评论(0) 分类 2007年VOA标准英语(六月)

Adriana: Shhh, Im trying to listen to the radio. Ralph: How can you listen to that radio station? All of their deejays have such funny voices. Adriana: Thats precisely why I like it. Take this guy, Kevin. He has a deep , husky voice that I find reall

发表于:2019-02-07 / 阅读(156) / 评论(0) 分类 地道美语播客

U.N. Secretary-General Ban Ki-moon says he is deeply concerned about civilian casualties in Afghanistan. Mr. Ban called for closer cooperation between civilian and military leaders. U.N. Secretary-General Ban Ki-moon, and Afghan President Hamid Karz

发表于:2019-02-07 / 阅读(131) / 评论(0) 分类 VOA标准英语2009年(二月)

You need to take proper care of your eyes to maintain good eyesight. There are few fundamental rules that have to be done for good eye care. As you know very well that exposure to sun is very bad for the eyes. Similarly, if you use computer for long

发表于:2019-02-09 / 阅读(176) / 评论(0) 分类 英语小短文

There are actually twenty-two naturally occurring amino acids known on Earth, 实际上,地救上有22种天然存在的氨基酸, and more may await discovery, but only twenty of them are necessary to produce us and most other living things. 更多

发表于:2019-02-17 / 阅读(127) / 评论(0) 分类 万物简史

Proteins are what you get when you string amino acids together, and we need a lot of them. 你把氨基酸串在一起,就得到了蛋白质。我们需要大量的蛋白质。 No one really knows, but there may be as many as a million types of pro

发表于:2019-02-17 / 阅读(89) / 评论(0) 分类 万物简史

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说,每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

发表于:2019-02-18 / 阅读(364) / 评论(0) 分类 阅读空间
学英语单词
aborts
agglutinumoid
alpha solid solution
aluminium acetylsalicylate
An Englishman's home is his castle.
anthropolinguists
apparent flow
attendance time
average bouncing busy hour
azetidine
bankvar
blocks of knowledge
blood cake
break down test
business day
buying contract
caterpillar logging arch
climbs down
conjugate groups of linear substitutions
conservatards
correcting code
cross country truck
Cumberland River
degradation of structure
diddlies
didermic embryo
empirical tradition
excessive releasing agent
fabri cation plant
film speeds
Firth of Clyde
gas wash tower
genetic block
guest professor
half-open cube
hate-boners
Hawai'i
hemocatheretic
high-intermediate-frequency receiver
HJB
hobnail boot
icterometer
impulse coupling
irrepentable
Kohath
lactotropin
lateral malleolar rete
lightweight acoustic processing and display system
lightweight coated paper
merrywing
metralgias
milk borne immunity
moieties
multistage image tube
Myocardiectomy
Nadymskiy Rayon
nakamoto
nanpa
neogranite
Niemegk
nitrotartaric acid
nonleaded (nonlead)
nurss
petrogram
pheons
photopic measurement
piston plate
plastic mechanism of coke formation
portfolio-balance approach
product variances
proportionates
pulse-labelling technique
qualchan
railroad rate schedule
Rediject
rinsing bath
room for improvement
Rydberg molecule
Saane (Sarine)
sandstones
scope of automata
securities charges
semireflector
shop gauge
slipper spurges
sonochemiluminescence
splenic reagent
starting posts
statistic mass
straw green epoxy polyvinyl butyral enamel
taxation of income
terminal hydroxyl
thiazesim
Tinh Gia
unsharp-masking
varied thrush
vertical triangle
waste disposal in the marine
weaponize,weaponise
welding inspection ruler
working part
workplace