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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(156) / 评论(0) 分类 Scientific American(九)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(146) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(133) / 评论(0) 分类 Scientific American(十二)月

Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of

发表于:2019-01-12 / 阅读(125) / 评论(0) 分类 2016年VOA慢速英语(三)月

C- Christopher Tietjens Mac- MacMaster Mac: A weekend on the golf links might do me some good, hobnobbing with our masters. I will change into my golfing togs when we get to our digs. One never knows who might be on the train. Mr Sandbach MP, going d

发表于:2019-01-21 / 阅读(145) / 评论(0) 分类 跟着英剧练发音

Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho

发表于:2019-02-17 / 阅读(138) / 评论(0) 分类 万物简史
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agricultural biology
anterior cardiac veins
Arminian
ascites due to cirrhosis
Athabasca Gl.
atomicdriven
average number index
backwrap
Baire class
be well left
biforous spiracle
blade-to-jet speed ratio
bogie mounted motor
Buorkhaya, Mys
chattelization
Cistanche
component wire
conjunctival dryness
curch
cut into pieces
Dendrobium williamsonii
deverbal
double-Warren truss
ductus nasolacrimalis
ebranlement
edith piafs
effective multiplication constant
elastic force
electromechanization
external air hose
fashion anxiety
fast footage
fimbristylis subbispicata nees et mey.
flexor caudi muscle
foreshore zone
fully-mounted
gaolor
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gaur
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gptt
hammer oyster
hatch cover controlling gear
Hydnocarpus heterophillas Kurn.
hypermastigotes
Ilich Ramirez Sanchez
indirect losses
intercloud medium
intercontact
job offers
lampropeltiss
Lφgstφr
mesotomy
message strategy
messenger winch
mogar
near-term target
non-self-propell
off-brand cigarette
own-root tree
penetration fracture curve
plantation in mining area
podospora curvuloides
polybutadiene styreneresin
predeployed
radioprotectants
range lights
regional press
releivo
rexroths
Robert Falcon
ruvo
Savva
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self-restrictive
semifixed costs
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shortwave diathermy machine
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simulation theorem
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sphenanthias tosaensis
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sternbach
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tax planning scheme
the length of
thingify
three-D
Trapezund
tricots
twin-skip system
two-wheel
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udagamandalam (ootacamund)
uniquely
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