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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Akabli
alopecia seborrheica
auxiliary turbine exhaust steam feed heater
available phosphoric acid
baggio
bantries
benzchromone
bollocksing
botflies
bouet
brunchtimes
bucketsful
cause offence to
caveat actor
Chaohai
Chinese ephedra root
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cloudbursting
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commercial reprocessing
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conductorships
crumbled
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dc coefficient
diophyllin
double shielded ball bearing
dracontine
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health education telecommunication
heterantha
hexosan
hydrazine phosphate
in alkaline soils
joyous
kahlfusses
keri
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leak to ground
leonhardt
local area differential GPS
low power DC electro-magnetic relay
mad point
mammary tissue
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microporellid
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the hunt is on
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Venae capsulares
water haze
West Australian Current
word-class
Zosteraceae