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保护牙齿,最重要的方法之一就是刷牙。但是从什么时候开始给孩子刷牙、怎么才能刷好牙却不能靠想当然。
One of the most important ways to protect your teeth is to brush your teeth. However, when to begin brushing your child, how to brush good teeth but can not be taken for granted.