水层虚反射

CHAPTER ONE [00:44.25]READING [00:45.74]Page 2 and 3 [00:48.43]THE YOUNG GREEN CONSUMER GUIDE [00:51.51]Review by Tony Ma [00:54.62]This book says that our world is in danger [00:59.32]It is vital that we do something to save the earth [01:04.21]Firs

发表于:2018-12-01 / 阅读(422) / 评论(0) 分类 上海牛津初中英语九年级

In 2008 astronomers discovered surprising amounts of water molecules where planets were forming near young stars. But how, they wondered, could those molecules survive? They should have been destroyed by ultraviolet radiation. In theory, planetary du

发表于:2018-12-02 / 阅读(95) / 评论(0) 分类 Scientific American(十二)月

EXPLORATIONS - Blue Holes: Some of the Least Explored Areas on Earth BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands s

发表于:2018-12-07 / 阅读(86) / 评论(0) 分类 2011年VOA慢速英语(十一)月

Lesson 91 Milk And Its Uses 第91课 牛奶及用途 Every child likes to drink new milk. 每个孩子都喜欢喝鲜牛奶。 How pleasant it smells and how sweet it tastes! 那香浓的味道, 甜美的滋味是多么诱人! Do you not want to kn

发表于:2018-12-18 / 阅读(42) / 评论(0) 分类 英国学生科学读本

联合国环境规划署将每年的6月5日确定为世界环境日,希望通过世界环境日主题让人类认识到可持续发展和公平发展的重要性,最终使全人类拥有一个安全而繁荣的未来。 2006年世界环境日庆典

发表于:2018-12-18 / 阅读(58) / 评论(0) 分类 英文语法词汇

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Take a fire antdon't forget your gloves. Toss it in water, and it'll eventually drown. But throw a group of fire ants into the water, come back the nex

发表于:2018-12-24 / 阅读(51) / 评论(0) 分类 Scientific American(四)月

The divers started in the ocean, but they are now within solid bedrock, 150 feet beneath someone's living room. They are now swimming in the water supply for the town above. Here they find, as they had hoped, life in the pitch darkness. These are hyd

发表于:2018-12-26 / 阅读(62) / 评论(0) 分类 自然百科2009年

If you've been outside before a rainfall in the spring, you might have noticed a particularly fresh or sweet smell that seeps into the air a few minutes before the first drops begin to fall. If you're familiar with this smell, it's a great way to pre

发表于:2018-12-27 / 阅读(48) / 评论(0) 分类 英语时差8,16

Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然:室温下把一些冰块放入水中,

发表于:2018-12-28 / 阅读(68) / 评论(0) 分类 初学者听力文摘精选

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

发表于:2018-12-29 / 阅读(139) / 评论(0) 分类 英语课程学习计划和讲义

How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a

发表于:2018-12-31 / 阅读(47) / 评论(0) 分类 英语听力文摘 English Digest

Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the

发表于:2019-01-02 / 阅读(144) / 评论(0) 分类 60秒科学

So we've created what I call this thing of stable ambiguity. 这种现象我称为稳定的模棱两可。 Stable ambiguity is when you are too afraid to be alone but also not really willing to engage in intimacy-building. 它指的是你害怕被剩下

发表于:2019-01-03 / 阅读(50) / 评论(0) 分类 TED演讲科技篇

BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands surface. These cave systems form in carbonate rock, often on islands.

发表于:2019-01-12 / 阅读(102) / 评论(0) 分类 2010年VOA慢速英语(十一)月

Whales, seals and walruses stay warm in chilly water because they have a thick layer of blubber. We humans rely on something like blubberneoprene rubber wet suitsto spend time in cold water. But the thick versions for really icy water are heavy and u

发表于:2019-01-17 / 阅读(94) / 评论(0) 分类 2016年Scientific American(十)月

Don: Yael, I'm going to take some vacation time so I can visit Chicago before it sinks and disappears. I mean, I'd like to see the Sears Tower and eat some deep-dish pizza before it goes. Yael: Relax, Don. Although Chicago is sinking, we're only talk

发表于:2019-01-22 / 阅读(89) / 评论(0) 分类 英语时差8,16

Everyone who has eaten instant noodles before knows how it looks like. It is very easy to cook it instantly by putting the noodles into the boiling water and add in those MSG packets, together with your other ingredients like eggs or vegetables. Howe

发表于:2019-02-05 / 阅读(95) / 评论(0) 分类 阅读空间

GIRL:Wow.You seriously spend a lot of time alone. BOY:What?So heres how it works.Water goes in the top,and food comes out the bottom. GIRL:When you shot it into the stratosphere( ['strtə,sfɪə]同温层) you figure it would induce( [ɪn'djuː

发表于:2019-02-23 / 阅读(50) / 评论(0) 分类 跟着美剧练发音

Voice 1 Thank you for joining us for todays Spotlight. Im Joshua Leo. Voice 2 And Im David Bast. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 In the ea

发表于:2019-03-04 / 阅读(94) / 评论(0) 分类 环球英语 Spotlight

Heres How..In a lake, cold water sinks to the bottom, forming a distinct layer underneath the warmer water on top. Wind blows across the top layer. This causes more of that warm layer to build up on one end of the lake, pushing the cold layer underne

发表于:2019-03-06 / 阅读(132) / 评论(0) 分类 英语时差8,16
学英语单词
's-Hertogenbosch
abstract model
advanced communications
aerospace research
angled pull
animadverting
annuity deferred
aucassin
back span
basic management
Bayes classifier
Beaver River
beta-Transducin
bladderwort families
boilaries
Bryoxiphiaceae
buccal cavity (oral cavity)
cable railways
Canin, Mte.
cladding defect
classifying
coat the bottom
cold-shoulderings
complaints department
constant-height surface
construction suspense account
control of boundary layer
customer-relationship
dicyanoethane
dimethylmalonate
Doogie mouse
drag race
drinupyl
dry zirconium metal
dull bit
entrammels
epitopes
family Teredinidae
flux pulsation
folkie
grain nozzle
have influence on
hemi-facial spasm
interconnection line
intermediate disturbance hypothesis
Irina
ironworker
it is domino with
Kaempferol-3-Galactoglucoside
Kostanay
low pitched rale
low-frequency
ludvigson
main flow orifice plate
manual radar-reconnaissance exploitation system
Musculus planus
New Model Army
normative decisiontheory
oeed
over drilling
parotid pneumocele
partial disarmament
Pathfinders.
percimonious
permanently feasible set
philippine cedars
Phillotson
photoconductivities
porous granules
promissive
refrigerated air dryer
retinitis stellata
reverse course
Rhodiola crenulata
robotic manipulator
s shilling
safe operation
scriggly
shooting period
sizing up
soapstoned
star clusters
static Kramer system
statisitic error
straight ended conical package
studio floor
super-huge turbo-generator
tangent chart
the evolution
thymoleptice
tire-pressure
tocofenoxate
topographic sheet
trifluorides
trovador
truck mounted water well drilling rig
ureteric bud
variable audio-frequency radiosonde
viscous-flow
warehouse location
zero-signal
ziomism