【核子学】同位素时标,原子钟

Voice 1 Welcome to Spotlight. Im Mike Procter. Voice 2 And Im Liz Waid. 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 The year was 1707. The English shi

发表于:2018-12-19 / 阅读(160) / 评论(0) 分类 环球英语 Spotlight

Jupiter and Venus Squeeze Earth's Orbit The Sun exerts an enormous and obvious influence on the Earth, with its gravity and light. But other bodies also have a small say in our affairs. 太阳用其重力和光线对地球产生巨大而明显的影响

发表于:2018-12-24 / 阅读(149) / 评论(0) 分类 2018年科学美国人5月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(207) / 评论(0) 分类 Scientific American(九)月

1. barometer /bəˈrɔmitə/ -- instrument for measuring atmospheric pressure as an aid in determining probable weather changes When the barometer indicates a rapid drop in air pressure, it means a storm is coming. 气压计显示出气压快速下降时

发表于:2018-12-30 / 阅读(206) / 评论(0) 分类 突破英文词汇

I found a place near him and waited without speaking. 我站在他旁边,我等候着,不说话。 Noon arrived, and just as on the day before, the sun didn't put in an appearance. 正午到了,跟昨天一样,太阳不出来。 It was sheer

发表于:2018-12-31 / 阅读(146) / 评论(0) 分类 《海底两万里》中英双语有声读物

Breakfast over, I made my way ashore. 早餐完了,我就到地上去。 The Nautilus had gone a few more miles during the night. 诺第留斯号在夜间又向上前进了好几海里。 It lay well out, a good league from the coast, which was cro

发表于:2018-12-31 / 阅读(212) / 评论(0) 分类 《海底两万里》中英双语有声读物

I held the chronometer. 我手拿着航海时计。 My heart was pounding mightily. If the lower half of the sun's disk disappeared just as the chronometer said noon, we were right at the pole. 我的心跳得厉害。如果太阳轮盘的一半隐没的

发表于:2018-12-31 / 阅读(185) / 评论(0) 分类 《海底两万里》中英双语有声读物

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(203) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(193) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(175) / 评论(0) 分类 Scientific American(十二)月

Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of

发表于:2019-01-12 / 阅读(172) / 评论(0) 分类 2016年VOA慢速英语(三)月

英语新词:这些meter后缀单词 你理解对了么? anemometer n. 风力计,[气象] 风速计。 audiometer n. [耳鼻喉] 听度计,听力表;测听计;音响测定器。 barometer n. [气象] 气压计;晴雨表;显示变化的事物

发表于:2019-01-14 / 阅读(240) / 评论(0) 分类 英文语法词汇

He was by no means ill-looking; quite the contrary. 他是一个精力充沛的人,像古埃及人那样有感染力。仿佛他会以这副模样永生! His pure tight skin was an excellent fit; and closely wrapped up in it, and embalmed with in

发表于:2019-01-29 / 阅读(169) / 评论(0) 分类 白鲸记

chiromancy n.手相术 chirp v.(鸟或虫)唧唧叫 chivalrous adj.武士精神的,侠义的 chivalry n.骑士制度 choleric a.易怒的,暴躁的 chop n.(用斧头等)砍,(风)突然改

发表于:2019-02-01 / 阅读(202) / 评论(0) 分类 GRE英语

Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho

发表于:2019-02-17 / 阅读(194) / 评论(0) 分类 万物简史

There was nothing to be seen. Not a reef, not an islet. No more Abraham Lincoln. A deserted immenseness. 我们望不见什么。望不见暗礁,望不见小岛。林肯号不见了;望见的只是一片汪洋的海水。 Raising his sextant, Cap

发表于:2019-02-25 / 阅读(284) / 评论(0) 分类 《海底两万里》中英双语有声读物

The chief mate of the Pequod was Starbuck, a native of Nantucket, and a Quaker by descent. 裴廓德号的大副叫斯达巴克,他是个南塔开特土著,也是个桂克的后代。 He was a long, earnest man, and though born on an icy coast, seeme

发表于:2019-03-10 / 阅读(263) / 评论(0) 分类 白鲸记
学英语单词
andeanism
armozeen
artificial fluctuation
at bedtime
autifs
automatic-value
Average accounting return
Bajau
benevolences
Brachiarticulata
buried crack
burn phone
Bush Patrol
cardinal mark
cendre
chankonabe
chloralkaline
chromium sesquichloride
concrete steel
constant dimension column
contractedness
contrast materials
conventional test
dew season
disquire
dorysthenes igai
effective depreciation cause
enqueues
ephesia
exergames
expenses incurred for opening of business
familial polycythemia
faring
fissi
floating assets
funipendulous
geometric fuel delivery beginning
gold potassium chloride
ground-based radar
Hannukka
heraldeth
Homalopterinae
lay up contactor 1
lemic
light ruby silver
list of chronological order
llanorian geosyncline
LLJJ
machinery and tools
maidenry
maria-glass
maskette
maya civilization
measuring range
medium-energy cyclotron
merapi
mismodeling
mountainous
muee
Mérou
Neuphylline
news distortion
nonautomatic self-verification
nonpenetrating particle
nubilous
Num Lock
odonto-maxillary orthopedic
outside blade
oval reel
parametric data
picknicker
plate form of wax crystals
poreblind
postage due letter
predictive power
primary meristem
rear of core
reorganisational
rhythmic gymnastics
roll-
rosy-cheeked
sausage tree
screes
southfld
speed-check
Spurgeon
Surinam-toad
sut
system of material product balances
Tartarian southern wood
technocrats
termination reaction
ternatest
theodolite-goniometer
towing the stern
toxicity analysis
transmanual auscultation
tubular air cooler
upon the heels of
vital circuit
wild wheat
Wildenreuth