[网络] 苯基乙胺短

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(200) / 评论(0) 分类 2014年VOA慢速英语(五)月

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(174) / 评论(0) 分类 万物简史

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(156) / 评论(0) 分类 VOA双语新闻 2014年1月

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(151) / 评论(0) 分类 Scientific American(三)月

Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

发表于:2018-12-28 / 阅读(133) / 评论(0) 分类 初学者听力文摘精选

its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th

发表于:2018-12-31 / 阅读(122) / 评论(0) 分类 英语听力文摘 English Digest

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(170) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(178) / 评论(0) 分类 Scientific American(十一)月

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

发表于:2019-01-14 / 阅读(162) / 评论(0) 分类 VOA标准英语2014年(一月)

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(127) / 评论(0) 分类 白领英语晨读

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(309) / 评论(0) 分类 英语新闻

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(148) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(165) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(172) / 评论(0) 分类 万物简史

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(187) / 评论(0) 分类 TED演讲教育篇
学英语单词
-load
.pps
a default in the payment of a loan
agricultural specialization region
agriculture bank of china
air defense sector
almag
antihumanist
Apostasia
be riddled with sth
begonia hemsleyana hooker
black beche-de-mer
blast-furnace cinder
Bruck an der Leitha
car-loads
commanderist
Congregational Church
Continental Celtic
cotton-covered wire
crossover distortion
cumbering
Dacian Wars
decision-making processes
delta siding
disk-drives
distant metastasis
dudman
electrodermal response audiometer
embryonic inducer
Erigeron tenuicaulis
esker ridge
extracapsular dendrons
extremization
fifteen love
follow-up signal
fungosities
gec-alsthoms
hardening agent
helicopter autopilot
helmet-shrike
high amplitude wave
horizontal tail volume coefficient
iatrochemistry
indexed access method
indicating
indispensable protein
individual system
intaglio engraved process
lasiocarpine
loudspeaker dividingnetwork
maintenance mode switch
make a mockery of sth
marashes
meritage
metal frame
miladi
monochromatic display
more tired
mountleighs
multi-dimensional expression
necrophorous
negative ion laser
normal period
open circuit cooling
OpenStep
over-stretches
Parry, C.
permit for warehousing of the customs
petigree
Pipels
position fix
public-record
rachia lineata
rear brake tube
relay digital counter
reversed loop winding
room temperature stability
Samutlu
scope of paper
semitest
shape anisotropy
shariafies
sludge gas
somnolence
sowing in holes
Spare the rod and spoil the child.
specific energy loss
spumific
Squaw I.
stomates
successor in title
tacking rivet
teletalk
thiophene
transcription termination
trapeziuss
trenchcoats
two-way cylinder
type of rearing
unaccurst
water-cooled laser
weinbach