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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(172) / 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(124) / 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(187) / 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(98) / 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(156) / 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(250) / 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(189) / 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(151) / 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(126) / 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(141) / 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(146) / 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(169) / 评论(0) 分类 经济学人科技系列
学英语单词
aba al afan
acanthogenic
ADODB
advanced signal processing system
Aerschot
all best
analysis and design of information system
annular drainage (pattern)
anthropolites
ANTI-MBLA
apparel sketcher
be rough
beta radiation
bio-macromolecule
brush-toothed lizard fish
Campbellstown
Caryophyllineae
chaoslike
choose the line of least resistance
church-chopping
coalgas
cofilter
coordinating agency
damage safety structure
Davis Bay
decoder for quadraphony
distance finding station
doubinary system
dry cider
dziadowa kloda
Elaeagnus luxiensis
electrical prospecting instrument
electrically controllable attenuator
emmentalers
escort forces
exogas
extrinsic tinnitus
family Forficulidae
far-sightednesses
floorboards
fly destroying preparation
free scheme
genus loganias
gravity lubrication
have the hide to do something
hydrophilic dust
interconnect
iron-59
ituss
Joint Military Passenger agreement
kallos
kallow
killing us all
Knight of St. John of Jerusalem
language idendification
large harbour tug
LCOT
Llanegryn
M-TH
macrura
material hoist
Maubourguet
MMY
multiplexed distribution
non-contentious matter
orientation fall
outer string
pain relief in burns
pearling
phoneys
picketts
Pleurospermum hedinii
Pomeron
posterior ramus
quindecil
return header
Rodaton
rsso
ruptured intervertebral disc
Schroder's operation
shatilla
shuttle marks
side-tipping truck
spin-adapted configuration
stomach crunches
strontium -barylite
subaqueously
successor set of set
surpised
T-butt weld
tensibility
thiospasmin
tippling-house
to play the fool
to the manor born
Ubachsberg
up-pipe
Ut.
Waldburg
white knights
without a blow
wrisoun