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Of the many puzzles mathematicians ponder, one is new ways to tie knots. There are more than six billion different types of knots that have been tabulated by mathematicians. Six billion. David Leigh, a chemist at the University of Manchester in the U

发表于:2018-12-24 / 阅读(171) / 评论(0) 分类 2017年Scientific American(一)月

Knot Not Easy to Knot 看结容易 打结难 Of the many puzzles mathematicians ponder, one is new ways to tie knots. There are more than six billion different types of knots that have been tabulated by mathematicians. Six billion. David Leigh, a che

发表于:2018-12-24 / 阅读(107) / 评论(0) 分类 2017年Scientific American(二)月

Burkina Faso's Compaore Claims Victory, Angers Opposition 布基纳法索总统龚保雷的获胜激怒反对派 Opposition candidates also say there was fraud, but that it's impossible to prove, accu

发表于:2019-01-03 / 阅读(164) / 评论(0) 分类 VOA2005(下)--国政军事聚焦

By Nico Colombant Kinshasa 31 October 2006 Election officials in the Democratic Republic of Congo have denounced the announcement of speculative results, following Sunday's decisive second-round presidential election. They have called for patience a

发表于:2019-01-09 / 阅读(159) / 评论(0) 分类 2006年VOA标准英语(十月)

In Ghana, election officials are counting the votes from Sunday's elections and unofficial returns show that with more than one-third of the constituencies tabulated, two leading candidates are in a tight race for the presidency. Election observers

发表于:2019-01-13 / 阅读(112) / 评论(0) 分类 VOA标准英语2008年(十二月)

Vote Counting Underway After Big Voter Turnout in Kenya Voters began lining up in the early morning hours at this polling station in Gatundu. Huge turnout across the country overwhelmed polling stations, and many, like Lucas Nganga, waited hours to v

发表于:2019-01-14 / 阅读(109) / 评论(0) 分类 VOA标准英语2013年(三月)

It's the worst one-day sell-off on Wall Street since after the 9/11 attacks. Stock prices plunged today across the board and around the world. The Dow Jones Industrial Average was down about 416 points at the closing bell and at one point it fell un

发表于:2019-01-26 / 阅读(111) / 评论(0) 分类 商业报道2007年

By the time Terman was finished, he had sorted through the records of some 250,000 elementary and high school students, 当所有测试结束时,特曼已经得到了250 000名中小学学生的测试结果, and identified 1,470 children whose IQ

发表于:2019-01-29 / 阅读(109) / 评论(0) 分类 异类:不一样的成功启示录

By Scott Bobb Johannesburg 04 December 2006 Madagascar President Marc Ravalomanana casts his ballot in Antananarivo, 3 Dec 2006 In Madagascar, preliminary returns from Sunday's presidential election show the incumbent in the lead. International obse

发表于:2019-02-04 / 阅读(161) / 评论(0) 分类 2006年VOA标准英语(十二月)

Britain's foreign secretary say he has serious concerns about election fraud allegations swirling after last month's Afghan presidential vote and David Miliband says a thorough investigation is required. David Miliband (File photo) Even before the A

发表于:2019-02-12 / 阅读(96) / 评论(0) 分类 VOA标准英语2009年(九月)

In Ghana, election officials are counting the votes from Sunday's elections and unofficial returns show that with more than one-third of the constituencies tabulated, two leading candidates are in a tight race for the presidency. 加纳的选举官员正

发表于:2019-02-14 / 阅读(89) / 评论(0) 分类 VOA双语新闻 2008年12月

Obama, Romney exchange barbs as jobs number improves WASHINGTON, Oct. 5 (Xinhua) -- U.S. President Barack Obama and his Republican challenger Mitt Romney intensified attacks against each other on Friday, as they reacted to a newly improved jobs numbe

发表于:2019-02-18 / 阅读(89) / 评论(0) 分类 英语新闻

Wood, Stone, Steel, Glass 木材,石头,钢铁,玻璃 On May 19, 2001, the first Apple store opened in Tyson's Corner, Virginia, 2001年5月19日,第一家苹果零售店在弗吉尼亚州的泰森角开业了。 with gleaming white counters,

发表于:2019-02-19 / 阅读(95) / 评论(0) 分类 乔布斯传
学英语单词
aeonatal mortality rate
alauda arvensis intermedia
all stop
amphibiome
Amphioxidae
analog states
attornment
Bentley,Eric (Russell)
benzyl dichloride
bleeding polyp
calibrated meter
capacitor switching step
carolina buckthorns
centres of gravity
ceramic fibre strip
claims management
clinker field
component of impulse
concute
continuous handling
curing bag
decapitalises
defangs
divulgest
dog-cherry
du Barry, Comtesse
dukw
dunagiri pk.
dust arrestor
eight-play
El Lagarto
Escurolles
evelinas
febi
flaying
foot-lever press
forest per cent
fortgang
foul gas
function of state
glucose-2-oxidase
Gwadur
HCPT
hydrosanitary
inadequate soil tillage
inland-water transport
intra and inter node communication
Justicia damingensis
knit sth into
locational equilibrium
Lost R.
low frequency electrotherapy
memorandum of complaint
mining product
moot court
moxie plums
multiplex lipoides granuloma
Naughty Nineties
nebramycin
night shade family
nontouch dryer
note of register
o-dark-thirty
Oldfield R.
paris-nice
Paryeongsan
payment against documents
Pediapred
pgm coding system
phosphoryl fluoride
pile-driving machine
pin-and-bushing coupling
plaaf
point of uniform convergence
pollen counter
protrudable
raising the roof
ranulas
Refresh button
responsibilized
riprap protection
saciate
same industry
savescum
scaleproof
secondary attachment epithelium
seeker azimuth orientation
segment feed loop
Spring Creek
straight section
stressors
subsea christmas tree assembly
Suez Canal lantern
super capillary pore
swaby
thermometric titrimetry
thermoregulatory mechanism
to see the light
torque yarn
Walnut Ridge
Wintera colorata
zero-entry