音标:[,pɔli'nju:kljә,taid] ;
n. [生化]多(聚)核苷酸
词型变化:名词复数形式 : polynucleotides

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发表于:2018-12-06 / 阅读(105) / 评论(0) 分类 斯伯恩自然拼音(MP3+PDF)

This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute. Biologists, traditionally track migrations by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted wi

发表于:2019-01-08 / 阅读(61) / 评论(0) 分类 Scientific American(六)月

SCIENCE IN THE NEWS - Is Eating Like Our Ancestors Good For Us? From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Christopher Cruise. And Im June Simms. Today we tell about evidence that early humans were meat-eaters much

发表于:2019-01-12 / 阅读(53) / 评论(0) 分类 2012年VOA慢速英语(十一)月

From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Christopher Cruise. And Im June Simms. Today we tell about evidence that early humans were meat-eaters much earlier than scientists have thought. We also tell about an anci

发表于:2019-01-24 / 阅读(41) / 评论(0) 分类 英语语言学习

By Carol Pearson Washington, DC 08 November 2006 watch Heart Stent report Heart stents are lifesaving medical devices that help prevent heart attacks. Most of these stents are coated with various drugs, but mounting data suggest drug-coated stents c

发表于:2019-02-03 / 阅读(103) / 评论(0) 分类 2006年VOA标准英语(十一月)

By Mike O'Sullivan Los Angeles 14 May 2007 Dinosaurs and other prehistoric creatures hold an enduring fascination, especially to the artists known as paleo-artists who bring the ancient animals to life. Mike O'Sullivan reports on the work of two pale

发表于:2019-02-04 / 阅读(93) / 评论(0) 分类 2007年VOA标准英语(五月)
学英语单词
3-Sulfoalanine
activation number
additional assured
Ampasimanolotra
antorbital cartilage
arsenical carcinoma
attitude survey
biographies
brakspear
building decoration
Bulk Packaging
business lives
carabinieri
chai-wallahs
cis-isomerism
clovoxamine
conduction deafness
constant-return-to-scale technologies
cuff-links
deviation due to regression
dihydroxyphenazine
effectiveness variance
emancipate the productive force
equipment failure
erdosteine
Eutrema tenue
exhibition drawing
facsimile weather chart
Fengchieh
fishing deck
flage
flooding water
foot section
foreign patent
fresh rehmannia root
gasket spring
gearbox oil filler
genus orcinuss
gurt
hard-line Islamists
haunched
heat extraction cycle
heater housing
hexaoxadiazabicyclohexacosane
host-to-network
hypsosinga sanguinea
immature kernel
interceptor sewer
ionic-covalent mixed bonding
jay walker
jianshuiite
Kanarraville
kg.
lacroisite
large white petunia
light-sensitive
loose powder
mains-cord pulling test
make certain
MEDLI
megaclone
meganuric (white 1951)
memorandum notes on the revenue estimates
metaphorizes
Methoxylene
multipassage kiln
Muscidae
mutatochrome
n-heptyl aldehyde
newton-raphson algorithm
noise analysis
place of receipt
Plants and Live Animals
pod dropping
pole reversing key
population convariance
predentary bone
radiological environment
recessed connector
redundant fault
remailers
retia
salt water soap
selection principles
self made
sewall
sit easy on
sixty-first
steam-turbine-driven windlass
subteres
super regulum
tableman
talk the bark off a tree
tasselblower
tea-urn
Territorial Waters Jurisdiction Act
tigrayans
toadfish
top operator
two-spring injector
undisturbed atmosphere
video-display adaptor