1-苯丙炔;苯基甲基乙炔

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发表于:2018-12-04 / 阅读(181) / 评论(0) 分类 英文魔法师字源大挪移

[00:17.36]Figure On The Proch [00:26.40]门廊鬼影 [00:36.51]Back in the early 1980s my aunt lived in a house [00:41.27]that was literally located in the middle of nowhere. [00:46.05]It used to really creep my younger brother and me out, [00:50.28]but

发表于:2018-12-11 / 阅读(164) / 评论(0) 分类 英语灵异故事

[00:17.23]Figure On The Proch [00:26.43]门廊鬼影 [00:35.14]I lay back down and tried to go back to sleep. [00:39.57]After I had lain there for about 5 minutes, [00:43.12]I started to hear a tapping sound. [00:45.77]I listened for a minute, [00:48.07]

发表于:2018-12-11 / 阅读(206) / 评论(0) 分类 英语灵异故事

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(167) / 评论(0) 分类 万物简史

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(141) / 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(123) / 评论(0) 分类 初学者听力文摘精选

You know, I just wanna say one brief thing about something the previous speaker said. I didn't wanna spend too much time on that 'cause I don't think it's important enough. But one thing is worth considering. He's the -- He's the nominal head of an

发表于:2018-12-30 / 阅读(186) / 评论(0) 分类 名人演讲

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(113) / 评论(0) 分类 英语听力文摘 English Digest

Fire Regime 火 Fire was a creation of life -- born from oxygen and organic matter -- ignited by lightning. Thus fire has been a fundamental feature of the Earth for at least 400 million years. A scientist talks about fire -- today on Earth and Sky.

发表于:2019-01-02 / 阅读(251) / 评论(0) 分类 (科普英语)Earth and Sky

Fire Cycle 火灾规律 The El Nino phenomenon of 1997-98 unleashed torrential rain in some parts of the world, while creating abnormally dry conditions in others. And it sparked record numbers of wildfires. Learn more about climate and wildfire -- toda

发表于:2019-01-02 / 阅读(257) / 评论(0) 分类 (科普英语)Earth and Sky

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(160) / 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(163) / 评论(0) 分类 Scientific American(十一)月

Larry到李华住的地方,去看她新领养的猫咪小雪球。今天李华会学到两个常用语:mental和pro. LL: Snowball is adorable! She's so little and fluffy! LH: 就是啊,我的猫咪

发表于:2019-01-11 / 阅读(182) / 评论(0) 分类 美国之音《流行美语》

By Brian Wagner Miami 22 September 2009 A supporter of Honduras' ousted President Manuel Zelaya runs during clash with riot police in front of Brazil embassy in Tegucigalpa, 22 Sep 2009 Riot police in Honduras on Tuesday broke up marches by supporte

发表于:2019-01-13 / 阅读(170) / 评论(0) 分类 VOA标准英语2009年(九月)

Education Minister Christopher Pyne has denied he offered to help James Ashby in his sexual harassment claim against former Speaker Peter Slipper. Mr. Ashby has told 60 Minites that Mr. Pyne offered to find him a lawyer and assured him a job and warn

发表于:2019-01-19 / 阅读(132) / 评论(0) 分类 澳洲ABC新闻快递2014年

A number of Sydney school students could face jail for allegedly importing drugs into the country. Custom says international crime sydicates are offering teenagers sums of money to accept packages from China. Two students, aged 15 and 16, are facing

发表于:2019-01-19 / 阅读(118) / 评论(0) 分类 澳洲ABC新闻快递2013年

Future of 8000 Australian steel workers around Australia hangs in the balance this morning as administrators of Arrium hold urgent talks with politicians. Arrium owns more than 4 billion dollars. The Opposition leader Bill Shorton says a nationalisti

发表于:2019-01-19 / 阅读(116) / 评论(0) 分类 澳洲ABC新闻快递2016年

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(298) / 评论(0) 分类 英语新闻

今天我们要学的词是pro-life。 Pro-life意思是反对妇女有堕胎的选择权。Pro-life的对立面是 pro-choice,支持妇女的堕胎权。美国总统奥巴马不久前在圣母大学发表毕业演讲。Hundreds of pro-life activis

发表于:2019-02-05 / 阅读(191) / 评论(0) 分类 英语每日一词

By Jeff Swicord Washington 03 November 2009 For decades, AIPAC (The American Israel Public Affairs Committee) has been the pro-Israel lobby in the United States, bolstered by a massive membership -it says 100,000 - among America's six million Jews.

发表于:2019-02-12 / 阅读(136) / 评论(0) 分类 VOA标准英语2009年(十一月)
学英语单词
'o' face
aconane
adisas
adsorbent layer
anti-oedipus
birth-death ratio
caramelization product
Carpomycetae
cheap as dirt
chocice
chordopoxviruses
clearing heat and purging lung
corporate intelligence
declinations
dependent territory
el-birehs
electric arc reaction
electrical tough pitch
electronic chart database
ethylhexanal
exhaust manifold companion flange
feature writer
Fibrothecoma
flow rate controller
foreign-debt
fuck sores
genus Hypochaeris
get the laugh of someone
grey mullet
guest starring
Gulran
helical electric power feeder
hemipteran
high order predicate calculus
high-gain linear circuit
honnour
Howitt, L.
index volume
inmediato
input-power rating
ithout
James Prescott Joule
keyboard service routine
lawyerball
lead salt photoconductor
liquid mirror
low-order
marias r.
MARIPRESS
Mazatenango
metabolic requirement
mixed-flow Francis turbine
moderate fines
mycorrhizae
nerve of external auditory meatus
non-commercial thinning
nonretractable fins
normal risk
only once
pangastritis
partial generalized least squares
perognathus hispiduss
physiologic allergy
planet stub axle
pore mushrooms
prehumans
preventriculus
protostegids
punch-bag
quasi-judicial duty
reference signal transmission
resolutive
rhotacize
ring frame
rur
sahan
San Ramón, Pta.
security axiom
Siebeneichen
simple epithlium
smize
snobs
sodium potassium tartrate
solid encapsulated transformer
Southern Darfur State
speak with tongues
spray jet
state-created
steam whistle
super quality combination pliers
supercavitating hydrofoil boat
surface waste
taking aback
topribs
torpedo homing system
toyotomi
tracing ability
user trap address
vegf-a
wassock
waterbug
wide cards