时间:2019-01-08 作者:英语课 分类:Scientific American(六)月


英语课

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute?


When the internet first got kicking, some scholars of democracy and civil society thought that online discussions could create what they called a "conversational 1 democracy": an ongoing 2 town hall without bricks and mortar 3. But the internet may not be as democratic as they'd imagined, according to a study in the journal Communication Research.


Researcher Itai Himelboim gathered eight million messages posted to 35 political and philosophical 4 newsgroups—like alt.politics.usa—over a six-year period. And he analyzed 5 the connections among the messages. Turns out that 50 percent of all replies were directed at just 2 percent of people who started threads, and who thus came to control the discussion. And the larger the newsgroup, the more polarized this effect became.


But these newsgroup dominators weren't posting much original content. Sixty percent of their posts were just content lifted from traditional news sources like the New York Times. Which is good news for the news business, the author says. Because it means people still want someone else to search out information and deliver it. After all, isn't that one reason why you listen to this podcast?


Thanks for the minute. For Scientific American's 60-Second Science, I'm Christopher Intagliata.



adj.对话的,会话的
  • The article is written in a conversational style.该文是以对话的形式写成的。
  • She values herself on her conversational powers.她常夸耀自己的能言善辩。
adj.进行中的,前进的
  • The problem is ongoing.这个问题尚未解决。
  • The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。
n.灰浆,灰泥;迫击炮;v.把…用灰浆涂接合
  • The mason flushed the joint with mortar.泥工用灰浆把接缝处嵌平。
  • The sound of mortar fire seemed to be closing in.迫击炮的吼声似乎正在逼近。
adj.哲学家的,哲学上的,达观的
  • The teacher couldn't answer the philosophical problem.老师不能解答这个哲学问题。
  • She is very philosophical about her bad luck.她对自己的不幸看得很开。
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
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学英语单词
a-kind
active solar
alpha-lipoprotein
alphanumeric CRT display equipment
ammonium manganese(ii) phosphate
anonymous literature
Baarle-Hertog
bala l.
Beprochine
bereswill
besnowed
besshe
bezaury
biorad
blind orebody
bliss-out
Bunsen funnel
butt joint with double straps
carpospore fluid
Caryl
cdg
celaenorrhinus pulomaya formosanus
central type
circuital current
circular file
columna anterius medullae spinalis
composituss
continuation column
corn scourer
danger notice board
dioxynaphthylmethane
DPOA
dust chamber
Ekran
emphasis
enabled transition
everon
expilate
extreme ultraviolet lithography
faulted upfold
fencibly
five-piece
fly-wheel scale
frog face
front printing
gamma cross section
Gyno-strosan
hold a race
hydropneumatic accumulator
ibl
improvement trade for export
interface condition
isoconic
jellyfish tree
keepaway
Kilfenora
leaching chromate
Leffinge
lose no time in doing something
lunar exploration
magnesium phenolsulfonate
multiple time scale integration
near-by
neela
new period
non-drinkers
non-operation instruction
nonauthigenic
obelises
ocean lore
pay roll tax
phenomenist
photon temperature
Pneumocaulus
point core
position repetitive error
power operated control
prandium
pseudo-cylindrical projection
Pyrochlore-wiikite
quadrature -axis component of current
read only write once
rivet worker
rostratest
sand trap section
satellite equipment connecting
screw shoes
sercretogogue
shoes of swiftness
side notes
single logarithmic curve
software configuration audit
SSFP
St George
state-set
Terry-Thomas
thermo control
time-saving bonus
vinylbenzene
weave design
wooden mold
zense