音标:[kwə'sɪdɪsks] ;
拟圆

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(103) / 评论(0) 分类 数学英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(126) / 评论(0) 分类 Scientific American(十)月

By Kevin Billinghurst Stockholm 09 October 2007 The 2007 Nobel Prize for Physics has been awarded to Albert Fert of France and Peter Gruenberg of Germany for discoveries that have helped fuel explosive growth in the storage capacity of computer hard

发表于:2019-01-11 / 阅读(72) / 评论(0) 分类 2007年VOA常速英语(十月)

DAVID GREENE, HOST: Researchers have been looking at how Americans are sitting and how bad it is for our health. Some have even called sitting the new smoking. And they say it's contributing to an epidemic of back pain. But what if the problem isn't

发表于:2019-01-17 / 阅读(103) / 评论(0) 分类 2018年NPR美国国家公共电台8月

今天Larry和李华在一家电脑商店买东西,李华会学到两个常用语:whatchamacallit和mooch。 (Computer Store SFX) LH: Larry, 你想买什么呀? LL: I need to get one of those wh

发表于:2019-02-03 / 阅读(77) / 评论(0) 分类 美国之音《流行美语》

By Mike O'Sullivan Los Angeles 12 March 2008 The battle between two rival high definition formats for video disks has been decided in favor of Blu-ray, which was jointly developed by Sony, Samsung, Philips and other companies. Mike O'Sullivan reports

发表于:2019-02-06 / 阅读(82) / 评论(0) 分类 VOA标准英语2008年(三月)

The battle between two rival high definition formats for video disks has been decided in favor of Blu-ray, which was jointly developed by Sony, Samsung, Philips and other companies. A U.S. manufacturer based in Washington State has embraced the new t

发表于:2019-02-14 / 阅读(90) / 评论(0) 分类 VOA双语新闻 2008年3月

The next time someone asks you how tall you are, keep in mind that your answer might depend on the time of day. You see, in the morning, when you wake up, you're taller than at night, when you go to bed. How can this be? Well, the spine is made of tw

发表于:2019-02-15 / 阅读(65) / 评论(0) 分类 英语时差8,16

Lesson 250 Can I borrow your pen? 1.Can I borrow your pen?我可以借用你的笔吗? 2.Can I borrow your bike?我可以借用你的自行车吗? 3.Can I borrow your car?我可以借用你的汽车吗? 4.Can I borrow your dictionary?我可以借

发表于:2019-02-20 / 阅读(157) / 评论(0) 分类 辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句

Bob had had plenty of problems with his old computer. He said he'd buy the insurance. You probably want us to make recovery disks, too, said Joe. If anything goes wrong, you'll need them to restart your computer. The insurance doesn't include the dis

发表于:2019-02-22 / 阅读(66) / 评论(0) 分类 英文短篇故事(纽约)
学英语单词
21-Super-Vita
acute irritation symptoms
air suit
alloy phase analysis
astrometric, astrometrical
Auenbrugger's sign
Aïn el Asker
Belfacillin
bia bia
bimolecular nucleophilic substitution with allylic rearrangement
black bodies
brachial groove
brilliant green-eosin agar
bromophenylphenol
bwcaw
Castanopsis eyrei
cation-exchange chromatography
cepaeas
Chilham
claudieatory
control oriented microcomputer
cracking case vapour line
cunt lips
cyclonic wind
Delano
Diethylnicotinamid
differential pressure liquid level indicator
diffusing globe
dispatch reports promptly
document information
DRAGN
Duncombe
duplicate gene (shull 1944)
electron beam exposure equipment
enteropathogenic escherichia coli
Eolis
exoroot nutrition
flat low
freestyle relay
fructus rosae
grade schools
gytrashes
heritage languages
hopper weir
hungercure
IMMPT
immunocytochemical
income from dividend
infective sinus of testis
insana
instantaneous damper current
integrated circuit breadboard
Leeuwenhoek's canals
leydens
love them and leave them
mail album
monopolitan
nordaustlandets
not know whether you are coming or going
Ofotfjorden
oil-engine driven
old age disability and insurance
Oleandocetine
origin of petroleum
overlooker
padronism
Parakmeria yunnanensis
pars opercularis
pasch-flower
pathological mitotic figure
payment remuneration
personal difference
pharming
pinnate tentacle
pneumolysis
poisonous fish and clam
popmart
potamogeton crispus l.
private space
progresses
puberty crisis
railway greening
riversiderite
scapuloclavicular articulation
seamless bag
segosin
Seseli yunnanense Franch.
set of upper bounds
soft-wired numerical control
sperocylinder
stewart-richardson
tawder
Tayalic
the public sector
toxic fat syndrome
two-way handshake
valve action
verhoeven
vertical lowering furnace
Vittinge
yankeetown
zero-coupon bond