光通表面密度

DAVID GREENE, HOST: This summer, smoke from wildfires has blanketed much of the West for days, even weeks. And that smoke has come in between the sun and ripening crops, which has become a worry for farmers. The Northwest News Network's Anna King rep

发表于:2018-12-02 / 阅读(162) / 评论(0) 分类 2018年NPR美国国家公共电台8月

Whether it was believed to have been a big ball of cheese home to the men in the Moon, or possess the power to turn people into werewolves, the Moon has been a perpetual source of wonder from ancient times to today. Just one quarter the size of Earth

发表于:2018-12-03 / 阅读(192) / 评论(0) 分类 自然百科2008年

The Moon 月球 We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation

发表于:2018-12-05 / 阅读(178) / 评论(0) 分类 有声英文阅读

The Moon We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation shows that the moon is not standing till. Its distance fr

发表于:2018-12-07 / 阅读(127) / 评论(0) 分类 双语有声阅读

The winter solstice events at Maeshowe demonstrate 梅萧韦古墓葬的冬至事件 an intimate and precise knowledge of 展现了古人 the sun's movements through the sky. 对太阳运行轨迹的精确了解 It was the first step on ourjourney to

发表于:2018-12-07 / 阅读(145) / 评论(0) 分类 2006年慢速英语(五)月

But to fully forecast the floods, he needs a lot more atmospheric data. He believed robotic drone aircrafts developed for the military could continue to measure the air over the oceans, charting its temperature, wind and humidity. And the flight coul

发表于:2018-12-27 / 阅读(124) / 评论(0) 分类 探索与发现2014年

Lesson 99 Fishing in the Fog 雾里捕鱼 Words: flint n. 打火石 flip adj. 无礼的,轻率的 float v. 漂浮,使漂浮 flock n. (禽兽等)群,大量;v. 蜂拥,群集 flora n. 某一地区或时期的植物总称 flounder n. 比目鱼 flourish vi. 繁荣,茂盛;健康成长;n. 挥舞 flou

发表于:2018-12-30 / 阅读(115) / 评论(0) 分类 胡敏托福词汇记单词

(Woman) Today I want to talk about the Earth's last major climatic shift, at the end of the last ice age. But first, let's back up a moment and review what we know about climatic change in general. First, we defined climate as consistent patterns of

发表于:2018-12-30 / 阅读(207) / 评论(0) 分类 托福听力短文

Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t

发表于:2019-01-02 / 阅读(194) / 评论(0) 分类 火星生命

-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,

发表于:2019-01-07 / 阅读(180) / 评论(0) 分类 万花筒2013年

If we look at the sky on a perfectly fine summers day we shall find that the blue colour is the most pure and intense overhead, and when looking high up in a direction opposite to the sun. Near the horizon it is always less bright, while in the regio

发表于:2019-01-08 / 阅读(172) / 评论(0) 分类 英语美文

Scientists and politicians have gathered in the Indonesian city of Manado for the World Ocean Conference. They are discussing the role of oceans in mitigating climate change and how climate change affects the world's seas, but their efforts are hamp

发表于:2019-01-13 / 阅读(124) / 评论(0) 分类 VOA标准英语2009年(五月)

Todd: So one very popular conspiracy theory is the moon hoax. Jonathan: Yes, that's always a very funny one to hear people talk about. They saw this one program on Fox which had five or six points which look so impressive, you know, when you've got t

发表于:2019-01-20 / 阅读(166) / 评论(0) 分类 原版英语对话1000个

Just as I arrived at UCLA with my first faculty position, everything was falling into place in terms of the ability to answer this question at the centre of our galaxy. The telescopes were getting bigger so you had the due ability to see fine details

发表于:2019-01-23 / 阅读(136) / 评论(0) 分类 探索与发现2013年

Science and technology 科学技术 Navigation 航海 Crystal gazing 水晶球观海术 A mineral found in a shipwreck was an ancient form of compass 在沉船里发现的矿石是古代的一种指南针 THIS may look like a nondescript lump of rock

发表于:2019-02-08 / 阅读(142) / 评论(0) 分类 经济学人科技系列

The twilight zone refers to the area between 100 and 1000 metres deep where a small amount of sunlight can still penetrate. The region is packed with ocean life that plays a key role in keeping atmospheric carbon-dioxide levels 30-percent lower than

发表于:2019-02-08 / 阅读(118) / 评论(0) 分类 英语新闻

Looking up at the night sky, we are amazed by how it seems to go on forever. 仰望夜空,我们为它的永无止境而感到惊讶。 But what will the sky look like billions of years from now? 然而数十亿年前的天空又会是什么样子呢

发表于:2019-02-13 / 阅读(147) / 评论(0) 分类 TED演讲教育篇

Chicxulub is buried under two to three kilometers of limestone and mostly offshore, 奇克休留布大坑在两三公里的灰岩深处,而且大部分在近海。 which makes it difficult to study, Anderson went on, while Manson is really quite ac

发表于:2019-02-25 / 阅读(133) / 评论(0) 分类 万物简史

台湾籍旅美老师今天交给我们的句子是: If our lungs were shaped like balloons, air that was not in direct contact with the balloon's inner surface couldn't diffuse through. Luckily, our lungs' architecture ensures that very little oxy

发表于:2019-03-05 / 阅读(182) / 评论(0) 分类 留美老师带你每日说英文

By bending arms and legs or angling her bodypresenting more or less surface area to the groundshe can change her rate of fall, slowing or speeding up her terminal velocity around ten or twenty miles per hour. To fall as fast as two hundred miles per

发表于:2019-03-06 / 阅读(180) / 评论(0) 分类 英语时差8,16
学英语单词
Abyār 'Alī
addisonism secondary
air shuttle
algerian centimes
angle of geodesic coutingence
asbestos jointing (asbestos packing)
at the feet of
audit contract
augmented link
automatic stroke adjuster
bear to be right
border rim
C-sections
compacted layer
creep feeds
cyclindole
cyclonic spray tower
diphacinone sodium salt
distortion isogram
double dissociation
Dourou
dramatism
electronic thickness ga(u)ge
emphasize
endomycetaless
ephemeris day
excuss
field delimiter
fist fight
general-purpose adhesive
go further and fare worse
graticule value
greater new yorks
gritting
hang off
Hedysarum L.
heir-apparents
hepatocarcinogenetic
Hewittia
information economy
instantaneous invariants
Internet Governance Forum
jack-a-dandies
jugcathayenoside
Junaynah, Ra's Al
Kahlon
kernel processor
lan-baseds
long-term measure
magick
metanormality
metham sodium
microdelta
mohler
natural gas pyrolysis
nelf
numis.
order Pedipalpi
Oswald, Saint
output loading
per diem allowance
Phulbāria
plan position information
pneunatic
portable drive
probable trouble area
protoclastic
PUFA-FO
pull-up resistor
Qiongzhuea macrophylla
queen olives
remote programme entry
ricinus poisoning
ritchin
San Bartolomé Jocotenango
Sebastiano del Piombo
self-sealing rubber septum
series of payments or receipts
Shawnee cake
shelter-deck
shortie
sinus sagittalis
solitary corals
Sosnove
space war
special audit report
Spirillum recti physeteris
t'ai p'ing y?eh
tarawa
Target zones
task allocation
the washing away of soil by moving water
thickshake
to the utmost of ability
Tyrothrix
unbiased estimate
Undulated Beam injector
unmanufacturable
up heave
Vosselare
West Bengal
wet slag