[地名] 奎瑟里 ( 法 )

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(165) / 评论(0) 分类 60秒科学

HEALTH REPORT – December 11, 2002: Mercury Levels in Fish By George Grow This is the VOA Special English Health Report. Two studies are adding to the debate about the health risks of eating fish con

发表于:2019-01-07 / 阅读(106) / 评论(0) 分类 健康与环境

A week-long transport strike in Ivory Coast has ended after Prime Minister Guillaume Soro announced the government will lower fuel prices. Brent Latham reports from our West Africa bureau in Dakar, the government promises new fuel subsidies. People

发表于:2019-01-08 / 阅读(97) / 评论(0) 分类 VOA标准英语2008年(七月)

'Athenaise,' by Kate Chopin 英语短篇小说:《Athenaise》 by 凯特肖邦 Our story today is called Athenaise. It was written by Kate Chopin. Here is Barbara Klein with the story. Athenaise went away one morning to visit her parents, ten miles b

发表于:2019-01-12 / 阅读(145) / 评论(0) 分类 2016年VOA慢速英语(二)月

Craters here stretch as far as the eye can see. Although no human has ever set foot on Mercury, we have a pretty good idea of what you would see. If you are walking around on the surface of Mercury, it will look outwardly a lot like the moon. When yo

发表于:2019-02-05 / 阅读(95) / 评论(0) 分类 自然百科2012年

Many aspects, like its geological past, are a mystery. But some things we do know, this lonely planet has a strange sense of keeping time. Once you arrive, you have to reset your watch for a time zone like no other. It has such an unusual orbit and r

发表于:2019-02-05 / 阅读(82) / 评论(0) 分类 自然百科2012年

Mercury's core makes up about 60% of the planet by mass. It's about twice as big as earth. Why would it have such a huge core for such a small planet? Some people think there was a huge impact. Kind of stripped off a lot of the planet and now what we

发表于:2019-02-05 / 阅读(83) / 评论(0) 分类 自然百科2012年

After Messenger's 3 fly-bys, we've now mapped more than 90% of the planet. Taken from around 124 miles, these images are the clearest to date of Mercury. And it's not hard to spot a crater of epic proportions, the result of yet another Titanic collis

发表于:2019-02-05 / 阅读(100) / 评论(0) 分类 自然百科2012年

Reason/ you are going to go to Mercury as a travel destination would be this night sight view because it's going to be highly unique in the solar system. You have sodium thats atoms that are streaming off and giving enough to see yellow light, so you

发表于:2019-02-05 / 阅读(93) / 评论(0) 分类 自然百科2012年

Move away from the sun, and you'd expect things to cool down a little. Venus, the picture of coolness and calm, all pale but gully-cloaked by clouds but the planet of love is shrouded in mystery-----------draw beneath her treacherous veil at your own

发表于:2019-02-05 / 阅读(101) / 评论(0) 分类 自然百科2012年

You are there, on the most exciting, nerve-shattering journey in the history of man! Fifty years ago, it was easy for us to imagine Venus, closer to the Sun and wrapped in clouds, to be our scorched, tropical sister, swarming with life. There was thi

发表于:2019-02-05 / 阅读(109) / 评论(0) 分类 自然百科2012年

And thats the first time; it was return black-and-white panoramas of the Venus surface. These images were extremely important, because it was the first time, we ,human beings had a chance to see with our naked eyes completely different other world. W

发表于:2019-02-05 / 阅读(93) / 评论(0) 分类 自然百科2012年

In 1989, the space shuttle Atlantis launches the Magellan Probe toward / Venus. After a journey of 15 months, Magellan uses radar eyes to peer through the clouds from orbit. Watching form earth is Ellen Stofan. When you have that ability to pick up a

发表于:2019-02-05 / 阅读(97) / 评论(0) 分类 自然百科2012年

And its here in a freezer that Messenger will encounter another puzzle: can ice exist on a planet so close to the sun? It's only when the first radar observations to the surface of Mercury were obtained back in the 90s that it was discovered that Mer

发表于:2019-02-05 / 阅读(155) / 评论(0) 分类 自然百科2012年

On earth, Hawaii has some of the most spectacular shield volcanoes that are very similar with the volcanoes we see on Venus. The huge gently sloped volcanoes of Hawaii may be impressive. On Venus there are at least 150 ranging from this size to ten t

发表于:2019-02-15 / 阅读(134) / 评论(0) 分类 自然百科2012年

One of the really exciting and high-level scientific interests is whether Venus is geological active today, because there are reasons to think of the clouds on Venus only exist, because there is ongoing geological activity, so this is one of the bigg

发表于:2019-02-15 / 阅读(140) / 评论(0) 分类 自然百科2012年

Congratulations, you've arrived on the hottest surface in the solar system. Here, the official temperature is eight hundred seventy degrees Fahrenheit. Day or night, equator or pole, the searing heat never varies more than a few degrees, and thats wh

发表于:2019-02-15 / 阅读(162) / 评论(0) 分类 自然百科2012年

Despite all this scientific effort, we still don't know what triggered Venus' diabolical transformation. People debated over whether Venus ever had a moon. If Venus had a satellite at one point, could that satellite eventually impacted onto the surfa

发表于:2019-02-15 / 阅读(146) / 评论(0) 分类 自然百科2012年

Valor will be tackling the acid clouds of Venus with little help from flying pan technology. This being two weather balloons are we watched Venus in the mid-1980s. This with wagon machines there were two sep balloons that the Russians put them in the

发表于:2019-02-15 / 阅读(141) / 评论(0) 分类 自然百科2012年

You never guess the dangers on the ground from orbit, except maybe for this, massive, double-barreled storms hovering above the poles. Of this, what we called dipole features trailing around, we don't know what, really what they are, but the whole fe

发表于:2019-02-15 / 阅读(155) / 评论(0) 分类 自然百科2012年
学英语单词
antibotulism Serum
antiestablishmentarianism
Arctic loons
autocayalytic polycondensation
AY6608
azomethine compounds
Bao Thang
binary sediment
biopharmaceuticals
brake valve tee
canis latranss
chementation zone
conveyer loader
Dannoura
dendritic osteophyte
dimethylmaleic acid
disconnected metric space
drotaverin
efficiency measure
electrohysterograph
enfirm
Esaias
fictitious equator
finalizations
fine cord
floating lift net
fourth-form
Fressanges
functionalist theory of emotion
gene identity
grovel
Guo Xi
habitual criminals
haemal arch
helicoma palmigenum
immune response
iriye
isotretincin
jant
Keldysh diagram
kummerowia striata (thunb.) schindl.
latticed
lignum fernambuce
like as if
limit of strength
lipoxin
loudias potamos
loxoconcha nozokiensis
luminosities
lux (meter-candle)
margey
microwave landing system
myocoel
near-extinct
Neustift
nonsimple domain
Northwestern blotting
odds and sods
old neighborhood
paccar
placental zone
plain stem
pseudocercospora giranensis
psychological realism
queuing mechanism
rakus
ramp metering
re-send
resolvins
reverse brake shoe
Roland I.
rotary can filler
Saaler Bodden
schoby
self-loading pistol
showrunner
simds
sinapis semina
sincopas
sophoraflavonoloside
squeeze boxes
standard value of production
static flip-flop register
stearylamide
stochastic input
tabboleh
tea-strainer
tetraphenylene
the Frog
thermal creep
undercleaning
United Maritime Consultative Council
unleafs
unplaces
vacuum (incandescent) lamp
valley fill
vertical milling and boring machine
viewdata receiver
vinculum linguae
whigmaleerie, whigmaleeries
with a high hand
yopd