英语翻译这是那篇文章：How many teeth?Newborn babies do not usually have

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英语翻译
这是那篇文章：
How many teeth?
Newborn babies do not usually have any teeth.Their front teeth begin to grow when they are about six months old.Most children have all their milk teeth by the time they are two years old.There are 20 teeth altogether.
The front teeth are used to cut food by biting.The back"double”teeth are used to grind up the food.This makes the food easier to swallow.
Foods that are sticky and have a lot of sugar in them will make holes in the teeth if the teeth are not cleaned with a brush.
The milk teeth start to fall out when children are six or seven years old.The new teeth that grow in thier place have to last for ever!

几颗牙?
新生婴儿通常不会有任何牙齿.门牙开始生长时,大约六个月全部是由孩子的时候,他们为两年的乳牙有20颗牙齿完全
前牙是用来切割食物的.回“双”牙齿是用来磨碎食物的food.This使得更容易吞咽.
黏性食物,并有大量的糖在他们将在牙齿洞如果牙齿没有刷干净.
牛奶牙齿开始脱落,当孩子有六,七年成长,在他们的地方要持续不断的新的牙齿!

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