时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第5册


英语课

   Fossil 化石


  Fossils are the ramains of animals or plants. 化石是动物或植物的遗骸。
  They are usually inside of rocks. 它们通常在岩体内。
  They are typically more than ten thousand years old. 它们通常有一万多年的历史。
  Fossils are made by sudden changes on the Earth, like volcanoes and tsunamis 1. 化石由发生在地球上的突变形成的,比如火山和海啸。
  Animals and plants are buried in soil by the sudden changes. 动物和植物因这样的突变而被埋在了土壤中。
  Then, they become rocks. 然后,它们就变成了岩石。
  The oldest fossil is about 4 billion years old. 最古老的化石约有40亿年的历史。

n.海啸( tsunami的名词复数 )
  • Our oceans are alive with earthquakes, volcanoes, and more recently, tsunamis. 海中充满着地震、火山,包括最近发生的海啸。 来自常春藤生活英语杂志-2006年2月号
  • Please tell me something more about tsunamis! 请您给我讲讲海啸吧! 来自辞典例句
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AH salt
alegre
alignment coordination
arcanist
Aywaille
bad eye
barium selenide
benzyl cellulose
bershad
bisecualism
bit-oriented
branchiostomids
bust shot
Castanopsis wattii
cathode feedback amplifier
cladosporium c. cucumerium ellis et arthur
colonias
communicating branch of peroneal nerve
counter eleetrophoresis
delivered on
derivative spectrometry
desmodium heterocarpon strigosum
destria
dietarily
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droolingly
duration of insurance
dynamic thermomechanical analysis
elbow oneself into
EmBP-1
ethylidenechloride
file case
flame descaling
forestation-suitable land
forty hours week
free topological algebra
fuggle
galvanized steel pipe
go down the tubes
goose neck vent
group transmission
guaranty fund
HE (high efficiency)
hog yoke
Ikorets
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La Auroda Airfield
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primal coordination
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rain forest?
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reclaim wasteland
return lightning
rocky mountain goats
Rydberg Peninsula
shannon expansion theorem
shiply
signal detection and estimation
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speckled finish
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spring suspension rod
stack of lamination
stenzel
stringbacks
supine
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Tarbela Dam
thermionic currents
thrift industry
tip-hub ratio
transmission ratio
uranyl uranate
vapor corrosiveness
water-lily tulip
yewtree