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硝基二苯基甲烷

The northeast just had its first big snow of the season. Meanwhile, on Titan, it was foggy. That weather report brought to you by researchers publishing in the journal Astrophysical Journal Letters. The scientists found that Titan, Saturns largest mo

发表于:2018-12-02 / 阅读(92) / 评论(0) 分类 Scientific American(十二)月

Scientists in Mexico say they may have found a way to cut production of methane, a gas linked to rising temperatures on the Earths surface. The scientists say their method may help reduce the methane released by cows, one of the main producers of the

发表于:2018-12-07 / 阅读(150) / 评论(0) 分类 2017年VOA慢速英语(二)月

Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th

发表于:2019-01-02 / 阅读(85) / 评论(0) 分类 60秒科学

分集介绍:导数,商数,正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(327) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

分集介绍:导数,斜率,速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(321) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

This is Scientific American's 60-second Science, I am Karen Hopkin. This'll just take a minute. Methane is a greenhouse gas that traps heat even better than carbon dioxide. It comes from a variety of sources, including fossil fuel production and even

发表于:2019-01-08 / 阅读(73) / 评论(0) 分类 Scientific American(七)月

The trouble with trees 自人类诞生之日起,树木就一直忠实地陪伴着我们。年复一年的生息轮回中,除了年轮的增长,我们似乎很难察觉树木所经历的改变。然而,我们的这些老朋友在全球气候急剧

发表于:2019-01-08 / 阅读(69) / 评论(0) 分类 英语笔译

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Silly Sausage是Nitrome于2011年5月28日发行的一款益智类游戏,它是以香肠在尽量不碰到其它损失生命物体的情况下吃光所有的钻石再到达终点为标

发表于:2019-01-08 / 阅读(175) / 评论(0) 分类 英语对接游戏

SCIENCE IN THE NEWS - Tons Of Methane Gas Could Be Trapped Under Antarctica BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. Im Bob Doughty. SHIRLEY GRIFFITH: And Im Shirley Griffith. Today, we tell about methane gas thought to be tr

发表于:2019-01-12 / 阅读(79) / 评论(0) 分类 2012年VOA慢速英语(九)月

Dairy farmer, researchers look for ways to power cars with bio-gas from cattle Tom Banse | Bellingham, Washington 23 February 2010 Dairy owner Darryl Vander Haak turns cow manure into 'bio-gas' which burns like natural gas in a small electric power p

发表于:2019-01-13 / 阅读(88) / 评论(0) 分类 VOA标准英语2010年(二月)

SCOTT SIMON, HOST: A new study published in the journal Science finds methane emissions from U.S. oil and gas operations are 60 percent higher than previous estimates from the federal government. Now, this comes at a time when we're getting more and

发表于:2019-01-17 / 阅读(56) / 评论(0) 分类 2018年NPR美国国家公共电台6月

But methane is actually odorless, too. 但是甲烷也是无味的。 Well then, what stinks? 那么,什么东西这么臭? The foul smell is usually due to volatile sulfur compounds, such as hydrogen sulfide and methanethiol, or methyl mercaptan

发表于:2019-01-17 / 阅读(103) / 评论(0) 分类 TED演讲教育篇

Flatulence, or passing gas, is a normal daily phenomenon. 胀气,或者放屁,是正常的日常现象。 Most individuals, yes, that includes you, 大多数人,是的,这包括你, will make anywhere from 500-1500 milliliters of gas and ca

发表于:2019-01-17 / 阅读(103) / 评论(0) 分类 TED演讲教育篇

Shale gas extraction 页岩天然气开采 The need to be seen to be clean 天然气是清洁能源吗? Natural-gas production is booming, but its green image is in question 天然气生产蒸蒸日上,但它的清洁能源形象却受到质疑 M

发表于:2019-01-26 / 阅读(124) / 评论(0) 分类 经济学人综合

HEALTH REPORT - New Heart Drug Shows Promise in African Americans By Cynthia Kirk Broadcast: Wednesday, November 17, 2004 This is Bob Doughty with the VOA Special English Health Report. Heart failure

发表于:2019-01-30 / 阅读(110) / 评论(0) 分类 健康与经济

我们中的每个人都应该对自己日常生活活动和选择所产生的温室气体负责。因此,防止气候变化需要地球上的每个人共同来努力。 EACH and every one of us is responsible for the greenhouse gases we emit in ou

发表于:2019-02-05 / 阅读(56) / 评论(0) 分类 阅读空间

On earth, most of the methane in the atmosphere has been belched by living organisms, 在地球上,大气中的大部分甲烷都是由活着的生物体喷出的, so finding the gas on Mars would be happy news for seekers after extraterrestrial

发表于:2019-02-16 / 阅读(83) / 评论(0) 分类 经济学人科技系列

Regardless of their source, any methane molecules in Mars's atmosphere would, on the basis of experiments on Earth, be expected to hang around for centuries. 不论它从何而来,根据地球的实验,火星大气中的任何甲烷分子将有望徘

发表于:2019-02-16 / 阅读(94) / 评论(0) 分类 经济学人科技系列

9月16日是墨西哥馆日,墨西哥馆五颜六色的风筝森林吸引了不少人的眼球,你知道小小的风筝里有什么大学问吗?其实风筝也有很多种分类哦,一起来看看吧。 说到kite这个单词,这也许是我们

发表于:2019-02-18 / 阅读(134) / 评论(0) 分类 英语口语

Today we go on a journey. It starts in Sweden over 100 years ago; and then moves to London; and finally moves to future worlds and other planets. But we start in Sweden. Alfred Nobel spent his life finding ways to blow things up. He was born in 1833

发表于:2019-02-19 / 阅读(89) / 评论(0) 分类 听播客学英语
学英语单词
a butt
Abbas, I(the Great)
agricultural economics of capital construction
air-bubble resorber
allogen(et)ic succession
anaesthetized
Aspidorhynchformes
be run-down
blart
block level
blocklike
Camelopardus
chlorocosanes
colloidal material
color-and-weave effect
common verbs
condemnedly
coordinated test program
counter ideology
counterindoctrination
De Witt, Jan
Debye frequency
digit-symbol display generator
disrecommending
divide overflow
do over
drawfile
drum cutter means
electromagnetic cascade shower
emery cylinder
energy-inefficient
f-pn
fernene
filament material
fixation of responsibility
Fovea costalis processus transversi
genus Adalia
genus leontodons
gesh
gobler
haikulike
hamerly
heave thigh
hoping
imprintings
John Doe and Richard Roe
Laboulbeniales
LBF
lettings
load-density
longeve
lyttons
medium size crushing
metal removal from edges of plates
millivolt analog-digital data encoder
Myeloencephalopathy
mystery gold
night-blooming jasmines
node equation standard form
nonqualified
Nonya
notaphilism
oceanic optical remote sensing
on-chip learning
pemphigoid gestationis
Penjamillo
picture receiver
plaster shooting
poda
poppylike
post-flight inspection (pfi)
power law spectrum
priffe
production of context-sensitive grammar
rasorial
receiving selsyn
recurrence paradox
remodellers
respond
riflebutts
right shoulder arms
ripsnorters
Ririlim
round-bottomed
sawtooth blasting
self-folding strip chart
semiconduct
silver quandongs
simulate television coding
stemphylium botryosum wallroth f. lactucum padhi et synder
superior plantation
teabing
teacher's desk
tetanism
urceoli
video sharing
wall receptacle
water parting divide
will-o'-the-wisp
with a vengeance
Wurtz synthesis
YRT