混合有机无机酸酐

Life Grows in the Soil of Time by Thomas Mann What I believe, what I value most, is transitoriness. But is not transitoriness - the perishableness of life - something very sad? No! It is the very soul of existence. It imparts value, dignity, interest

发表于:2018-11-30 / 阅读(237) / 评论(0) 分类 英语励志美文精华

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

发表于:2018-12-07 / 阅读(215) / 评论(0) 分类 火星生命

By Mario Ritter Broadcast: July 8, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Recently, a listener in Nigeria told us about an organization called World-Wide Opportuniti

发表于:2018-12-07 / 阅读(199) / 评论(0) 分类 VOA2003(下)-农业与经济

本讲为2006年下半年新的教学内容,请对照讲义听声音! Students(researcher/scholar) of Nature are not satisfied with guessing, but they observe, day after day, the changes which tak

发表于:2018-12-30 / 阅读(171) / 评论(0) 分类 自考英语(一)78讲

今天我们要学的词是organic。 Organic, 有机的,绿色的。 Organic product, 有机产品。近年来,美国很多消费者开始崇尚绿色、有机食品。不过,统计数字显示, Organic food accounted for only 3.5% of the fo

发表于:2019-01-11 / 阅读(191) / 评论(0) 分类 英语每日一词

Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each

发表于:2019-01-12 / 阅读(160) / 评论(0) 分类 2014年VOA慢速英语(十一)月

AS IT IS 2014-10-21 Climate Change Could Destroy Farms in Africa 气候变化会使非洲农场受重创 A new study says the speed and severity of climate change could cause major damage to small African farms. These farmers are already struggling t

发表于:2019-01-12 / 阅读(182) / 评论(0) 分类 2014年VOA慢速英语(十)月

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(191) / 评论(0) 分类 VOA标准英语2012年(九月)

ARI SHAPIRO, HOST: The human species is about to change dramatically. That's the argument Yuval Noah Harari makes in his new book Homo Deus: A Brief History Of Tomorrow. Harari is a history professor at Hebrew University in Israel. He expects we will

发表于:2019-01-16 / 阅读(178) / 评论(0) 分类 2017年NPR美国国家公共电台2月

Sunscreen comes in many forms, each with its own impacts on your body and the environment. 防晒霜有很多种,每种对你的身体和环境影响各有不同。 With so many options, how do you choose which sunscreen is best for you? 有了这么

发表于:2019-01-17 / 阅读(211) / 评论(0) 分类 TED演讲教育篇

Premier Li Keqiang says China should consider science and technology as a primary productive force. Scientific and technological innovation to a large extent determines the future of China's development strategy. In history, we have missed several te

发表于:2019-01-20 / 阅读(169) / 评论(0) 分类 英语新闻

-Sheldon:Leonard, excellent. I want to show you something. excellent:太好了 Leonard太好了,我想让你看点东西。 -Leonard:Can it wait? I need to talk to you. 能等一会吗,我们得谈谈。 -Sheldon:Just look. I've designed

发表于:2019-01-28 / 阅读(334) / 评论(0) 分类 生活大爆炸第一季

Sprigg submitted a paper to Nature, but it was turned down. 斯普里格给《自然》杂志写了一篇论文,但是没有被采用。 He read it instead at the next annual meeting of the Australian and New Zealand Association for the Advancement

发表于:2019-01-29 / 阅读(164) / 评论(0) 分类 万物简史

Although chemistry had come a long way in the century that separated Newton and Boyle from Scheele and Priestley and Henry Cavendish, it still had a long way to go. Right up to the closing years of the eighteenth century (and in Priestley's case a li

发表于:2019-01-29 / 阅读(169) / 评论(0) 分类 万物简史

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(262) / 评论(0) 分类 农业与发展

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月,俄罗斯最大的大学图书馆之一发生了火灾

发表于:2019-02-02 / 阅读(175) / 评论(0) 分类 英语新闻

Despite pledges in the last year to fight pollution, Beijing saw barely any improvement in air quality in 2013. The Beijing Environmental Protection Bureau says the intensity of major air pollutants remained much the same in 2013 as they were in the

发表于:2019-02-05 / 阅读(166) / 评论(0) 分类 CCTV9英语新闻2014年01月

Dropping your smartphone when taking a selfie could soon be less risky, says specialist glass maker Corning. 专业玻璃制造商康宁日前表示,自拍的时候不慎掉落手机可能不再会碎屏了。 Shattered or cracked screens are the n

发表于:2019-02-05 / 阅读(176) / 评论(0) 分类 英语新闻

Finally, and perhaps a little unexpectedly, readings can be thrown out by seemingly unrelated external factorssuch as the diets of those whose bones are being tested. One recent case involved the long-running debate over whether syphilis originated i

发表于:2019-02-17 / 阅读(169) / 评论(0) 分类 万物简史

Israeli(以色列) researchers say they have developed a powerful bait that effectively attracts and kills malaria-infected mosquitoes but is completely harmless to humans and other animals. The toxic sugar bait developed by scientists at Hebrew Univ

发表于:2019-02-25 / 阅读(234) / 评论(0) 分类 英语新闻
学英语单词
aerological table
aillts
alarm pheromone of Rhizoglyphus robini
all-capital earning rate
aloathing
apoxia
assembly language coding
bad cholesterol
Battenheim
battistoni
Beechburg
Blank Check Preferred Stock
bleed off passage
bouillabaisses
branch balance book
caamano sd.
chelon affinis
chromospheric knot
clavams
conditional specification
constant component list
coris musume
corner kick area
Court-mantle
curlewis
custody charges
dash up
delta shore line
depacketization
digit marker
divergent cone
drawber
external priority discipline
fabronia secunda
feather stitch
first order pole
fundamental right
germlike
glocalities
grey-faceds
grid melt-spinning
Guntram
helianthrene
hydrogen chlorite
hypopituitarisms
hypoplastic left heart syndrome
i-neiled
information-giver
inoccupation
Ishikari-wan
isomuscarine
kohnstamm
kulchas
Lagdo
louper
magillicuddy
Margo lateralis pedis
mentomeckelian bone
Mexican juniper
modeling process
multirange channel
musculus semispinalis cervicis
neutralino
new-build
nuclear power plants
oil
omnigender
out of funds
p-carboxymethylphenyl-arsonic acid
Paxman
pedogenetic relation
pentalene
potenxin
proterokinetic
rate of rent
resuscitable
riot control operations
Roker
rossby-haurwitz wave
scoles
Sjogren's disease
sniff around
snores
spectral responsivity of photo effect
spreath
steering knuckle arm
structural detail
struse
sylvatron
Tatarskaya Pishlya
Tesanj
thermal lensing effect
tip-top
triad group
unbarricaded
unpent
uremic pericarditis
uretercystoscopy
vidcasting
water soluble oil
Yaltushkiv
Yangī Qal'eh