开始刷牙，把豆粒大小的牙膏置于牙刷上，然后用贝氏(Bass)法涵盖你口腔中所有牙齿的所有表面。
To brush your teeth, put a pea-sized drop of toothpaste on your toothbrush, then cover all the surfaces of all the teeth in your mouth, using the Bass technique.
最受欢迎的方法是所谓的贝氏(Bass)刷牙法，集中在牙齿的三分之一最接近牙龈线和牙龈本身的地方，那里是牙菌斑容易集中的地方。
The most popular technique, called the Bass technique, concentrates on the third of the tooth nearest the gumline and the gum itself, where plaque tends to concentrate.
最受欢迎的方法是所谓的贝氏(Bass)刷牙法，集中在牙齿的三分之一最接近牙龈线和牙龈本身的地方，那里是牙菌斑容易集中的地方。
The most popular technique, called the Bass technique, concentrates on the third of the tooth nearest the gumline and the gum itself, where plaque tends to concentrate.
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