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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(60) / 评论(0) 分类 Scientific American(六)月

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(83) / 评论(0) 分类 农业与发展

Im Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus with PEOPLE IN AMERICA in VOA Special English. Today, we tell about Roberto Clemente. He was one of the most honored baseball players in history. He became the first Latino baseball player to be inc

发表于:2019-01-12 / 阅读(49) / 评论(0) 分类 2010年VOA慢速英语(四)月

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(58) / 评论(0) 分类 经济学人科技系列

3 Ways to Stop Living Vicariously Through Technology Image courtesy of jonrawlinson on Flickr As technology continues to improve, it is becoming easier than ever for us to live vicariously through the creations of others. Living vicariously through t

发表于:2019-02-03 / 阅读(63) / 评论(0) 分类 阅读空间

By Bill Rodgers Washington, DC 03 November 2006 watch Nicaragua Election Preview Former leftist Nicaraguan leader Daniel Ortega could return to power if he wins Sunday's presidential election. The opposition is divided and Ortega appears to hold a s

发表于:2019-02-04 / 阅读(106) / 评论(0) 分类 2006年VOA标准英语(十一月)
学英语单词
adjacent track
arterioscleroses
asw tactical data system
augment
axenomycin
axewoman
backplane
beyond the shadow of a doubt
blunder on
Bourdieu
Bungu
cable clips
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character quantity
checkerboard
Chiloquin
Clafen
clamping cap
comparative sensitivity
cook house
copy rights
Cornu's spiral
date-time group
decapitable
defatigation
defense data network (ddn)
deflocculation-agent
delicate adjusting
deltic
dobbies
dynamic air pressure
elaphe poryphyracea
experiential learning
family rynchopidaes
fixed platform truck
fungite
galathea b. (south b.)
grammite
haemonodus lymphaceus
hernia of white line
honour killings
hybridmalaria
ice breaking tanker (ibt)
indurates
injection blocking
iron-alum
Jenghis Khan
knob-ends
laugh out of court
lexicographic sorting
limit of liquidity
look see through coloured spectacles
look through one's fingers upon
lookahead
Maruim
monopoem
Mylius'test
nonfamily
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outwrestled
oxamidic acid
Parametriotes theae Kusnetzov
pearl papules of penis
Phelasin
polymer composite
polytomic
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postliminary
presshouses
provost-marshal
pulse count encoder
Ranunculus polii
reactor (pressure)vessel penetration
reform and openness
rotorforming
rubber slab for foodstuff
running surface of rail
rutilation
sample points
sauna bath
secondary electron induced by ion bombardment
serpentine steel flex coupling
sharp definition
Sierra Madre Occidental
signing over
sintered metalic friction material
socialfascism
Southwest National Park
strengthening agent
string dryer
sums of money
surface infection
syringa faurie lavallee
tannogelatin
tone colour
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xanthism
Yūtō