甲基叔丁基醚分 解

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

发表于:2018-12-16 / 阅读(107) / 评论(0) 分类 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

发表于:2018-12-24 / 阅读(159) / 评论(0) 分类 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

发表于:2018-12-24 / 阅读(157) / 评论(0) 分类 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

发表于:2018-12-28 / 阅读(126) / 评论(0) 分类 初学者听力文摘精选

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

发表于:2019-01-02 / 阅读(179) / 评论(0) 分类 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

发表于:2019-01-03 / 阅读(162) / 评论(0) 分类 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

发表于:2019-01-06 / 阅读(194) / 评论(0) 分类 农业与发展

Alice: Hello and welcome to 6 Minute English from BBC Learning English: well be talking about a story in the news and learning some vocabulary along the way. Im Alice and joining me today is Rob. Hi Rob. Rob: Hi there Alice. Alice: Now, Rob are you a

发表于:2019-01-07 / 阅读(169) / 评论(0) 分类 六分钟英语

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

发表于:2019-01-11 / 阅读(159) / 评论(0) 分类 VOA2003(下)-环境与健康

Whales Never Die on the Ocean Floor 鲸鱼不会死在海底 Their calls can be haunting. Their size can take your breath away. And their worlds are dark and quiet. Whales! There are many different species of these huge, warm-blooded, air breathing m

发表于:2019-01-12 / 阅读(330) / 评论(0) 分类 2015年VOA慢速英语(十)月

This is a 21-year-old Palestinian woman undergoing hymenoplasty. 这是一个21岁的巴勒斯坦女性,她正在接受处女膜修复手术。 Hymenoplasty is a surgical procedure which restores the virginal state, 处女膜成形术是一项用来恢

发表于:2019-01-18 / 阅读(131) / 评论(0) 分类 TED演讲娱乐篇

马路上的车越来越多,在车多的马路上,自行车道甚至会被挤占,这是真的吗? Alice: Hello and welcome to 6 Minute English from BBC Learning English: well be talking about a story in the news and learning some vocabulary a

发表于:2019-01-23 / 阅读(200) / 评论(0) 分类 一起听英语

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

发表于:2019-01-26 / 阅读(186) / 评论(0) 分类 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

发表于:2019-01-31 / 阅读(175) / 评论(0) 分类 VOA常速英语2013年(十月)

Death, it seems, is rather a complicated affair, this is what your body goes during and after. 死亡似乎确实是很复杂的一个过程。我们一起来看看尸体将经历怎样的变化。 1.The last bit of oxygen in your body is used up, an

发表于:2019-02-01 / 阅读(158) / 评论(0) 分类 趣味英语

It has become customary to talk of technology as if it were a special sector of the economy consisting of the manufacture of sophisticated electronic goods, the creation of software, and the provision of services reliant on information and communicat

发表于:2019-02-08 / 阅读(145) / 评论(0) 分类 英语新闻

An Icelandic man who purchased the last-ever McDonald's meal sold before the chain closed down in the country in 2009 was stunned when he found it did not go mouldy. 在2009年麦当劳连锁店在冰岛全部关闭之际,一个冰岛居民买了最后

发表于:2019-02-09 / 阅读(366) / 评论(0) 分类 阅读空间

在我们的生活中,死亡是我们所有人必定会遇到的事情,无论是家庭成员还是宠物,甚至是你都将有终结之时。事实上,每分钟世界上大约就有100人死亡。但在人死之时到底会发生什么呢?

发表于:2019-02-17 / 阅读(198) / 评论(0) 分类 阅读空间

1. 在并列连词(and, but, for, nor, or, yet )前使用,用来连接句中的各分句。 The principal reason for this is that none of them possesses chlorophyll, andsince they cannot synthesize their own carbohydrates, they obtain their supplie

发表于:2019-02-19 / 阅读(146) / 评论(0) 分类 托福英语

雅思写作语料库:家庭关系不紧密 社会类: It is generally accepted that families are not as close as they used to be. Give some reasons why this change has happened and suggest how families could be brought closer together. Include a

发表于:2019-02-26 / 阅读(179) / 评论(0) 分类 雅思英语
学英语单词
Aberdonian
absorber element
aforedescribed
Allantoidea
animal duster
at weld edge
be off the hook
Bena-Tshadi
bianchite
bonnin cleaner
Boyles machine
buckle into
C.I.F.
camphor powder
caverns of cavernous body of penis
centre of effort
chargecaps
charger plate
circular smokehouse
Coguillettidia
conjugate quaternions
cover annealing
crawfords
cream sauce
d'entraigues
deflation receptors
dentalize
diffused hydrocele
diverging lens
drait
elastical wave measurement
electrolytic antifouling system
entire leaf
Fadd
family pectinidaes
forest measuration
get your act together
Green Monday
half voltage starting
halved match
hewer
imidazolamine
industrial civil engineering
inimicous
inreducible graph
iodophenazone
laser autoset leveling device
launch control system
level of tolerance
liberation of heat
madhulika
maieutic methods
map like radar display
Mesocco
metastate
mixed feed manufacture
mixed mesenchymoma
multitudinarious
neptunium (np)
normal gravity field
obligate anaerobic
omegasome
oracle bones
parietal vein
pile extracting
pluggingup
postformable
primary vascular tissue
proper velocity
quindecamine
randomily
Razgulyayevka
resortlike
retriggering
Rosbercon
rotamete
rotatory current
run in cycle
San Fratello
santa sophias
scutari, lake
sectarial
shark-fishings
silicosmirnovskite
single dose
small-screen
spiral feeder
standard-bearers
staurolite cyanite
suprapharyngeal lymph glands (or retropharyngeal glands)
tansill
Tatarians
telephone plug
textile auxiliaries
theoretical combustion temperature
theresas
three-quarter elliptic spring
Toteng
trakas
Two negatives make an affirmative
two spindle
weighted-sum-of-utilities welfare function