地形同位素分馏效应

By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide

发表于:2018-12-15 / 阅读(163) / 评论(0) 分类 VOA2003(下)-环境与健康

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(166) / 评论(0) 分类 Scientific American(九)月

His health condition is bound to effect his work. 他的病况一定会影响他的工作。 be bound to指一定,必定,免不了。又如: His laziness is bound to result in his failure. 他的懒惰注定导致他的失败。

发表于:2018-12-25 / 阅读(135) / 评论(0) 分类 蒋健棠英语实用句子

Benjamin Frankin wondered about(at) lightning. He combined his curiosity with imagination and carried out his well-known experiment to show that lightning and an electric spark are the same thing. Cur

发表于:2018-12-30 / 阅读(319) / 评论(0) 分类 自考英语(一)78讲

Sometimes when I'm in heaven 有些时日感觉身在天堂 I get forgetful of the Earth, woah 世间繁尘琐事早已遗忘 Until I hear you bickering like boys and birds 直到我听到你的声音如鸟儿啼鸣似孩童嬉戏 The heat is on, 阳光

发表于:2019-01-03 / 阅读(130) / 评论(0) 分类 听歌学英语

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(156) / 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(148) / 评论(0) 分类 Scientific American(十二)月

今年7月,14岁的美国华裔少年刘继打破老虎伍兹的纪录,成为美国青少年高尔夫锦标赛史上最年轻的冠军,同时刷新老虎伍兹保持了19年的纪录。刘继出生在纽约州一个只有11万人口的小城市史

发表于:2019-01-09 / 阅读(189) / 评论(0) 分类 实用英语

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(138) / 评论(0) 分类 2016年VOA慢速英语(三)月

The Effect of Advertisement 广告的效果 Some businessmen were talking about advertising on TV excitedly. As none of them had ever done it before, every one had his point of view. At this moment, Mr. Grey came by. He was a car dealer and he had on

发表于:2019-01-28 / 阅读(173) / 评论(0) 分类 英语小达人

60 测试新药安慰剂的疗效 DATE=6-21-01 TITLE=SCIENCE REPORT - Placebo Effect Study BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(190) / 评论(0) 分类 科技之光

今天我们要学的词是ripple effect。 Ripple effect, 连锁反应。 The shutdown of the local mine had ripple effects on the entire community, 当地这家煤矿的关门,在整个社区引起了连锁反应。 美国汽车业界人士警告说

发表于:2019-02-02 / 阅读(155) / 评论(0) 分类 英语每日一词

今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示,Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革,但是又担心改革可能带来的副

发表于:2019-02-05 / 阅读(169) / 评论(0) 分类 英语每日一词

As the development of the society, people want to conquer the environment, they use the high technology to change the environment, when people are satisfied with what they did to the nature, the nature is starting to teach human being a lesson. In th

发表于:2019-02-06 / 阅读(167) / 评论(0) 分类 英语作文

Affect and effect are different in meaning, though frequently confused. Affect is chiefly used as a verb and its main meaning is to influence or make a difference to, as in the following example sentences: Affect一般用作动词,其含义为:影响

发表于:2019-02-07 / 阅读(226) / 评论(0) 分类 英文语法词汇

今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示,Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革,但是又担心改革可能带来的副

发表于:2019-02-13 / 阅读(218) / 评论(0) 分类 英语单词荟萃

As the development of the society, people want to conquer the environment, they use the high technology to change the environment, when people are satisfied with what they did to the nature, the nature is starting to teach human being a lesson. In th

发表于:2019-02-13 / 阅读(161) / 评论(0) 分类 英语作文

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(147) / 评论(0) 分类 万物简史

VATICAN CITY, Feb.28 (Xinhua) -- The resignation of Pope Benedict XVI came into effect at 8 pm local time (1900 GMT) on Thursday, who had left the Vatican by helicopter for the papal vacation retreat in south Rome earlier in the afternoon. The pope h

发表于:2019-02-17 / 阅读(180) / 评论(0) 分类 英语新闻

BEIJING, Sept. 1 (Xinhua) -- Medicine prices at public clinics have been notably reduced thanks to a policy that promotes basic medicine, an office of the State Council said Thursday. Current price levels of basic medicine used by government-funded t

发表于:2019-02-18 / 阅读(150) / 评论(0) 分类 英语新闻
学英语单词
aigkette
Almendricos
anti-frizz
Antigua Guatemala
aqua vitae
artist's conk
axial proximal groove
axis of fold
Bad Oeynhausen
block votes
blowbuddies
bomb deflection top of shelter
bridging crack
bromazepan
bulk elevator
Churchill's iodine caustic
coast piloting
come down plump
cortislim
crocodylus moreletii
crrep
cruise efficiency
dairymaid
datary
Dead men tell no tales
Dejerine's sign
diked
dissonantal
drying system
duration of diapause
ear-corn conveyer
enfilading
erythronium albidums
external angle bead
family Globigerinidae
fastness property
feedback strategy
Fiji Hindi
flighter
formyltransferases
four-wire multiplex facilities
fuccboi
Gossa
grain cast-iron roll
H-RASGG
hand balance
HFBR (high-flux beam reactor)
ignition switches
information loss
jrom
Klixbüll
loading manifest
magnetic saturation flux desity
maintenance factor
mandolutist
Mazières
metallicus
minimum of quadratic form
mixing bowls
morifolium
navigating sextant
non-repudiation of transport
omnifocal
paleomicrobiology
papio sphinx
pattypan squash
phyllosticta ambrosiodis thuman f.santonensis brun
physallization
pseudofolliculitis vibrissa(e)
quick match
recoil apparatus
reemit
Russell-Saunders coupling
San Franciscan
self-estimates
senoclidea decorus
Septoria aconiti
serjeanty
shred out
single mass system
single nucleotide polymorphisms
skeletal dolomolds
soursac
status group
stroboscopic direction finder
supercapillary seepage
surge-protect socket
symmetrical dipole
tamping pick
tare gross
tarsoplasty
the shortest time
thermoreflectometry
uranium thorium reactor
utterly
vapour compression refrigeration cycle
vonks
white-count pipette stage
widdy
winesburg, ohio
WO (write out)
y?an yu kuan