[地物] 古地磁极

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(79) / 评论(0) 分类 VOA2004(下)--雅典奥运

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

发表于:2019-01-22 / 阅读(76) / 评论(0) 分类 自然百科2011年

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发表于:2019-02-09 / 阅读(167) / 评论(0) 分类 加州语文教材California Treasures G5

By calculating how old the rocks are where we find these ancient compasses, we can figure out how long ago the magnetized parts were locked in. That tells us which direction was magnetic north tens of thousands of years ago. Surprisingly, its not alw

发表于:2019-02-23 / 阅读(95) / 评论(0) 分类 英语时差8,16

Magnetic North Pole Moving Faster Than Scientists Expected Earths north magnetic pole is moving, researchers say. It has moved so much, so quickly that a group of scientists hurried to change a model that helps guide shipping, airplanes and submarine

发表于:2019-03-12 / 阅读(257) / 评论(0) 分类 2019年VOA慢速英语(二)月
学英语单词
'ques
1-methoxy-2-methyl-propane
AFL Grand Final
alfred kastlers
all-relay interlocking
ambrgos
attemptingly
be sent into the world
bellcores
bladder disorder
bread-crumbs
cafenet
chatterist
chlorinated insecticide
Clematis peterae
COFC terminal
colored noise
commonplaceer
core marker
coupled valve
Critical Feminist Jurisprudence
cross-lamination
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discontinuous crystallizer
dove-ship
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enterokinesia
erect pile
Estaing,d' Charles-Hector
ferric oxalate
fibrous-limonite
fleches
flying press
fried sardine
FXT
Gan I.
gravelins
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Haute-Marne
homogeneous
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inshore fish
intermediary paper
intermitten lake
It wouldn't be the end of the world.
k-ary huffman encoding
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Matamba
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Ohehanoihu
oligocilium
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polymer flush fluid
ponera alisana
price-choosing behavior
profit margin on sale
rangings
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release of pressure
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serayn
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ship's documents
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uk -haired
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