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By Jerilyn Watson Broadcast: October 6, 2003 (THEME) VOICE ONE: An office in the United States government has helped protect 1)the property rights of inventors for more than two-hundred years. Its job

发表于:2018-12-07 / 阅读(69) / 评论(0) 分类 VOA2003(下)-美国人文故事

丹尼尔和阿美在观看中国古代的四大发明。丹丹觉得那些都是简单的东西,没有什么意义。其实他们的发明者都是一些很聪明的人。那最后丹丹的观点有没有改变呢? Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we

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Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we got the last two. May: Look, Danny. The Four Great Inventions! Daniel: Gunpowder, compass, the paper making, and the printing. May: I really admire

发表于:2018-12-31 / 阅读(54) / 评论(0) 分类 英语大赢家上册

Section 38 Inventions They say that the world’s first great invention was the wheel. Perhaps we could argue that the discovery of fire was equally as important. Of course we don’t know who invente

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THIS IS AMERICA - October 14, 2002: Patents and Inventions By George Grow VOICE ONE: An office of the American government has helped to protect the legal rights of inventors for two- hundred years. Th

发表于:2019-01-02 / 阅读(108) / 评论(0) 分类 This is America

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学英语单词
apomel
articular capsule rupture
artificial valve replacement
bald-pated
bentiamine
boscage
calm technology
capitalist society
Catholic Reaction Force
center line of mine-swept route
centre-circles
centrifugal-casting
chequer-board albite
collegiate bench of judges and people's assessors
contingent claim
cutround
cyclohedra
decalins
deka-coulomb
Dipropylacetic
distributed emission crossed-field noise-generator
drop something into someone's lap
eczematid-like purpura
engber
EQLog
exhaust-heated open cycle
expected monetary value
feed face-up
fill-in line
final trim
final-lock mechanism
flexible strut
forward azimuth
geophiluss
Gonadotropophin
gotta go do something
graphic metaphor
gray goods
gyrostabilization
headlight bracket
heroons
hierarchial scheme
induced lift
jessamy
jump welded pipe
legislation of science and technology
let it have its swing
medical selection
method of trial
microdus laxiretis broth.
microprogrammed emulator
middle course
msei
multicancer
murell
NAPCA
O'Neillites
opright
organic molecules
peraxillary
persimmon juice
personal-prejudice models
pipe section pressure test
plain type breaker
pnagus artus
powder flowmeter
prom queen
recirculation operation
resequent valley
resulfurize
retrojected
rickettsiaceaes
rossmann
sea ivory
self-aligning idler
sequential decision procedure
single-pulse device
sloppy-mindedness
slow-starters
spherical pressure vessel
spiked bolt
ST_chance-and-possibility_good-luck-and-bad-luck
structure of the labour force
suwe
tea-roller
tears of wine
terminal ileitis
test electrode
textile process
thin albumen diameter
togrind
trophogenous layer
tweenhood
typosquatter
unilateral matching
uninvestigated
vested estate
VHF receiver
vice director
viridissimus
warrant of seizure
you can't have it both ways