[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(136) / 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(63) / 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(60) / 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(121) / 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(60) / 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(55) / 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(59) / 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(66) / 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(65) / 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(67) / 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(77) / 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(63) / 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(66) / 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(115) / 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(103) / 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(112) / 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(127) / 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(109) / 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(108) / 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(125) / 评论(0) 分类 自然百科2012年
学英语单词
a.c.c
absolute electrical units
aflame with
albitite
amphibole-foyaite
ankyrinB
antihydropics
autogenus
basal ganglia
beta-emitter
bloodlands
boric acid batching tank
camphone
chronometer escapement
class factory
come down on the other side of fence
commission on secondary school curriculum (pea)
cosmic X-ray spectroscopy
cumal
damped oscillatory mode of motion
defenced
dicamptus isshikii
Didymocarpus
DNA nicking
drifting mine
electronic equilibrium
electronic total station
euler's construction
evections
extrafreight
fibrin ferment
fit ... up
granitous
grayed
gruntometers
hassanali
helicodiscid
Helicteres lanceolata
hundred's place
hypothetical wavefront
ijala
infopreneurs
interrupted quenching
invertivore
jack-chain
joint heir
Lappula himalayensis
Ma'bus Yūsuf
Mahayanism
Marsannay-la-Côte
Maxwell element
mazal
metal containing dye
MiniDisplayPort
non-urgent
paradoxicalness
Phormidium purpuraecens
plugging-up line
price on one's head
quesited
read the tape
recreational facilities
relative amounts
Remote Source-Route Bridging
replenishments
reserve for compensation for default loss
resizers
respiration cycle
rheim
rimskin
rotatable slide
Ruawuri
sensualists
shepherd satellites
silflay
sittest
Spanish lime
split head
stability of surrounding rock in underground cavern
stratfords-upon-avon
sueoka
sulfinamide
superficial unit
surface clutter
tape-slides
the Pareto principle
total thermal power
traumatic injury of lens
trouble locating
tushinghams
ultrasonic digital water level gauge
up - and - down motion
veneer stone anchoring
Vilajuiga
visual appraisal
welding of tubes
wild water
Woger
work center variable capacity inquiry
yield to subscriber