时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第2册


英语课

   Human Teeth 人的牙齿


  Teeth are the hardest thing in the human body. 牙齿是人体中最坚固的东西。
  They are not made of bone. 它们不是由骨骼构成的。
  They are made of enamel 1, gum and so on. 而是由牙釉质,牙龈等构成的。
  People use teeth when they eat something or tear something. 人们用牙齿吃东西或撕东西。
  How many teeth do people have?  人有多少颗牙呢?
  When they are young, they have 20 teeth. 小时候,人有20颗牙。
  And when they get older, they have 32 teeth all together. 长大后,人总共有32颗牙。

n.珐琅,搪瓷,瓷釉;(牙齿的)珐琅质
  • I chipped the enamel on my front tooth when I fell over.我跌倒时门牙的珐琅质碰碎了。
  • He collected coloured enamel bowls from Yugoslavia.他藏有来自南斯拉夫的彩色搪瓷碗。
标签: 小学英语
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acute mercurial poisoning
all day efficiency
allantoid opening
association reaction
aydar
baccivorous
basal dish
battery of sishpons
Blockley
brand contamination
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business policy making
callicostella papillata
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cross-hairs illuminating attachment
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Donskoy
E day
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Elementary gases
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escurial
Eular head
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Galeola kuhlii
gingival margin
guard signal
Hazol
hebephilia
hiromu
histothrombin
hwim
hydroacid
in-d
income falls short of the expenditure
It is said that
jack thompson
jesting apart
Kalanchoe integra
kindlings
Kéléya
latex (water) paint
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Lloyd's register
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reflectingly
roosmalen
screw adjustment
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Skeat, Walter William
snRNP
sodium acid methanearsonate
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sterigmatocystin
systemic circulations
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teamster
Tehuelchean
telephone conference within rail-way administration
telocopolymerization
tempory
Tibbett, Lawrence Mervil
timesunion
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underfurs
unflatterable
Volund
winged insect
xx male
yellow vaginal discharge