双语有声读物

He had discovered the boundary between the crust and the layer immediately below, the mantle; 他发现地壳与下面一层即地幔的界线, this zone has been known ever since as the Mohorovicic discontinuity, or Moho for short. 此后,这个区

发表于:2019-02-25 / 阅读(87) / 评论(0) 分类 万物简史

The scale is of course more an idea than an object, an arbitrary measure of the Earth's tremblings based on surface measurements. 当然,里氏震级是一个概念,不是一件东西,是一个根据地面测量的结果武断地得出的地球震

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As you will gather from this, measuring earthquakes is not always an exact science, particularly when interpreting readings from remote locations. 你从中可以知道,测量地震并不总是一门很精确的科学,尤其在牵涉到解释来自

发表于:2019-02-25 / 阅读(85) / 评论(0) 分类 万物简史

The San Francisco earthquake of 1906, for comparison, measured an estimated 7.8 on the Richter scale and lasted less than thirty seconds. 相比之下,1906年的旧金山地震只有里氏7.8级,持续了不到30秒。 Earthquakes are fairly comm

发表于:2019-02-25 / 阅读(125) / 评论(0) 分类 万物简史

Tokyo stands on the boundary of three tectonic plates in a country already well known for its seismic instability. 日本已经是个以多地震闻名的国家,而东京恰好又位于三个构造板块的相遇之处。 In 1995, as you will remem

发表于:2019-02-25 / 阅读(81) / 评论(0) 分类 万物简史

The most notorious such quakes ever to hit the United States were a series of three in New Madrid, Missouri, in the winter of 1811-12. 在美国经历过的这类地震当中,最著名的要算是1811-1812年冬发生在密苏里州新马德里的一

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Four years later, Soviet scientists decided to try their luck on dry land. 4年以后,苏联科学家决定在陆地上碰碰运气。 They chose a spot on Russia's Kola Peninsula, near the Finnish border, and set to work with the hope of drilling

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Because we can't see into the Earth, we have to use other techniques, which mostly involve reading waves as they travel through the interior. 我们无法看到地球的深处,因此不得不使用别的方法,主要包括观察波在地球内部的

发表于:2019-02-25 / 阅读(118) / 评论(0) 分类 万物简史

So how much do we know about what's inside the Earth? Very little. 因此说,我们对地球的内部情况究竟了解多少?很少。 Scientists are generally agreed that the world beneath us is composed of four layers, 科学家们普遍认为,

发表于:2019-02-25 / 阅读(98) / 评论(0) 分类 万物简史

How and when the Earth got its crust are questions that divide geologists into two broad camps, 地球如何有了地壳,何时有了地壳,这两个问题把地质学家分成两大阵营, those who think it happened abruptly early in the Eart

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The hour hand on a clock moves about ten thousand times faster than the flowing rocks of the mantle. 钟面上时针的移动速度,比地幔岩石的流动速度,要快大约1万倍。 The movements occur not just laterally as the Earth's plates

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So all that can be said is that at some slightly indeterminate point as we head toward the center of Earth we leave the asthenosphere and plunge into pure mantle. 因此,我们只能说,在前往地球中心的过程中,我们会在某个不大确

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The outer core is in many ways even less well understood, though everyone is in agreement that it is fluid and that it is the seat of magnetism. 外核在许多方面被了解得更少,虽然大家都认为它是液态的,是产生磁力的地方。

发表于:2019-02-25 / 阅读(92) / 评论(0) 分类 万物简史

We may be going through a reversal now. 我们现在也许正经历一次逆转。 The Earth's magnetic field has diminished by perhaps as much as 6 percent in the last century alone. 仅仅在过去的一个世纪里,地球的磁场就减弱了大约

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At that time, the lower forty-eight United States had not seen a volcanic eruption for over sixty-five years. 当时,美国本土的48个州在过去的65年里没有见过火山爆发。 Therefore the government volcanologists called in to monitor

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Almost the only person who believed that something really bad might happen was Jack Hyde, a geology professor at a community college in Tacoma. 几乎只有一个人认为真的快出大问题了,他就是塔科马一所社区学院的地质学教授

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The luckiest person on that day was a graduate student named Harry Glicken. 那一天最走运的要算是一位名叫哈里格利肯的研究生。 He had been manning an observation post 5.7 miles from the mountain, 他是离火山9公里处一个观

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In an extraordinarily unself-critical book called Surviving Galeras, Williams said he could only shake my head in wonder when he learned afterward 但威廉斯毫不自责,在一本名叫《加莱拉斯火山幸存记》的书里说,当他后来听

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Ninety minutes after the blast, ash began to rain down on Yakima, Washington, 爆发90分钟以后,灰烬开始雨滴般地洒落在华盛顿州的亚基马。 a community of fifty thousand people about eighty miles away. 那是个有5万人口的社

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And what causes these massive intraplate rupturings? 这种跨板块大地震是怎么发生的? Something deep within the Earth. 原因在地球深处。 More than that we don't know. 更多的情况我们就不知道了。 By the 1960s scientists

发表于:2019-02-25 / 阅读(109) / 评论(0) 分类 万物简史
学英语单词
a great lot
abdominal apoplexy
Adaplex
aesthetics of science
afion
almousser
am gereda (kallim)
amphitypy
antimilk
aphanipterous
approach rail
archenteron
aspergin
axial tooth profile
bactericidal rsys
bloodspots
booster club
bozman
certificate of itinerary
circulation of money
close-coupling approximation
contemplated route
cross nogging
dismiss from
double wheel crushing
east by north
electropradiology
embedded SCSI
ESS (electronic switching system)
ethylhexyl-p-methoxycinnamate
expansion period
finger guide for release
formalized model
fully inserted
Haydarābād
heavy duty gear
high radiohalogen leakage
high-dump box
homogeneity analysis
indicator light
inner thin albumen
insoluble bromide ratio
instruction execution phase
isatic acid
isobaric change
itemized schedule
Ivanic-Grad
jawrope
junk science
katano
Kohālūīen
library marketing
lipford
machine load
macrocephali
mauve-blue
mesh of finite element
miaskitic
middle peduncle
moscow (moskva)
NANBSAG
new simplicity
notif
optimization of microgram
over-compaction
oxygenising
panfundoscop
petasuses
photo-engravers
pilotage tariff
piston rod bottom nut
power reels
protistologies
Ritz-paschen series
roof extract ventilator
Rumex dentatus
scheduling processor
self supporting structure
siliconmanganese
sit still
skimmias
speckliness
st. mary of bethlehems
storm-door
stourly
strippings
Tauber's theorem
third generation system
tie-plato
tilting pass
torrejon de ardoz
treuhand
unicameral script
url-minder
value part
velitation
Vila Nova de Gaia
walker excavator
water ballast tank
werne
white cotton tape
winding interval