拟收敛的

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(338) / 评论(0) 分类 数学英语

The tiny brain of this zebra finch may help scientists answer questions on how people form words to talk. Like humans songbirds learn to vocalize by imitation. Were able to not only just study the mechanisms of how vocal learning works in these songb

发表于:2018-12-08 / 阅读(290) / 评论(0) 分类 VOA标准英语2018年(五月)

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(357) / 评论(0) 分类 Scientific American(一)月

Researchers have discovered an almost universal word. Huh? You say? Even if you are not a native speaker of English, you probably dont need a translation for Huh? It appears that the word, or a very similar form of it, is used in most of the language

发表于:2018-12-28 / 阅读(220) / 评论(0) 分类 轻松英文阅读

Evoking images from the liquid metal and nearly unstoppable Terminator from the movies, BAE Systems has posted concept video footage of a process to create drones of the future. 近日,BAE系统公司发布的一份概念视频展示了未来制造无

发表于:2019-01-07 / 阅读(329) / 评论(0) 分类 英语新闻

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(454) / 评论(0) 分类 Scientific American(十)月

ROBERT SIEGEL, HOST: Biologist Jonathan Losos and I have at least one thing in common - we were both blown away by the late paleontologist Stephen Jay Gould's 1989 book Wonderful Life. Gould saw evolution as being all about odd contingencies, acciden

发表于:2019-01-16 / 阅读(353) / 评论(0) 分类 2017年NPR美国国家公共电台9月

But even though the insect brain is organized very differently from ours, there are some striking similarities. 虽然昆虫与人类大脑的组成大相径庭,但是仍有很多惊人的相似之处。 For example, most insects have smell detecto

发表于:2019-01-17 / 阅读(317) / 评论(0) 分类 TED演讲教育篇

Dogs have been mans best friend for thousands of years, a source of companionship and loyalty since the Stone Age. 几千年以来,狗狗都是人类最好的朋友,从石器时代开始就是人类忠诚的陪伴。 Now scientists suspect they h

发表于:2019-01-31 / 阅读(271) / 评论(0) 分类 英语新闻

Kerry Leaves Pakistan Hopeful, Despite Divides尽管有分歧 克里仍给巴基斯坦留下希望 U.S. Secretary of State John Kerry has wrapped up a visit to Pakistan with an agreement by the two countries to resume a dialogue on security issues. T

发表于:2019-02-01 / 阅读(332) / 评论(0) 分类 VOA常速英语2013年(八月)

Itcanbeinferredfromthepassagethatthe authorwouldbemostlikelytoagreewith whichofthefollowingstatementsregarding socioeconomicclassandsupportforthe rebelandLoyalistcausesduringthe AmericanRevolutionaryWa

发表于:2019-02-06 / 阅读(265) / 评论(0) 分类 英文语法词汇

Science and technology: Panda genetics 科技:熊猫遗传学 Hey dude. Give me six! 嘿,伙计。用六指击个掌吧! Two strange mammals illuminate the process of natural selection. 两种不同的哺乳动物阐明自然选择的过程。

发表于:2019-02-16 / 阅读(348) / 评论(0) 分类 经济学人科技系列
学英语单词
air taxi
allow for the wind
antisubmarine detection equipment
atomic arrangement
Banja Luka
blowdown pump
capacitor tachometer
carbonizes
certificate of non-appearance
chargingup
chukker
church-door
citrus nobiliss
coupon system
cracked tongue
credit easing
curtos obscuricolor
desperate criminals
di-isobutylene
digital controlled plotter
discounted accounts receivable
electron excitation of the nucleus
electroplane camera
erythrocyte rouleaux
expressive trait
exterior liability
extraradical
face lapping mill
fatigue life model
finback whale
Flatwillow
flow of lubricant
for-
free condition
funnel-shaped rectal tube
gas scrubbing system
genus himantoglossums
gradient level
grand opera
granular material
ground-note
guai lan
Gulf Arabic
Hock Monday
Hostacydine
idle-current wattmeter
implantation of internal mammary artery
initial rate of absorption
ion beam
isolation tent
isopropyl-alpha-naphthyl ketone
laminated veneer
latitude of an observer
local mode
low-oil content measuring transformer
ludwig's
macroscopic algae
magnetic orientation
market collateral
maximum module to be cut
mid america
miscellaneous expenditure
neutralizing chemicals
organic pollutant criteria
Ottawa National Wildlife Refuge
outside money
parveens
porphyrilic acid
Portulacaria
post-stimulus
postquestionnaire
psychrapostema
pulser rack
pyloric gland like appendages
racepben
restored section
rosenblooms
serviture
sestertium
skull proper (or cranium proper)
split wedge
stainless steel mineral spring pump
starch-tragacanth thickening
stat sheet
stenochoric species
stepford wives
Strauss's sign
Talinum calycinum
tenontosaur
Tommy John surgeries
two-point perspectiveness
unbalanced centrifugal force
Uniform Securities Act
urban typhuss
vallated
velocity ratio
welded-hollow spherical node
well-dried
wet box
wizenedness
xeroxed
y?jo kabuki (japan)