保持牙齿健康的重要性。

The importance of keeping our teeth healthy.

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但是最好的方法是保持你的牙齿健康。

But the best way is to keep your teeth healthy.

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这是保持健康牙齿最有效的时间。

It is the most effective time for maintaining a healthy set of teeth.

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我们都知道怎样保持身体的健康还有怎样保持牙齿卫生，对不对？

We all know how to keep the body healthy and how to keep it healthy, right?

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我的妈妈说，“你必须保持你的牙齿健康。”

My mom says, "You must go to keep your teeth healthy."

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有些是使骨骼和牙齿保持艰苦和健康所需要的。

Some are needed by the bones and teeth to grow strong and healthy.

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有些是使骨骼和牙齿保持艰苦和健康所需要的。

Some are needed by the bones and teeth to grow strong and healthy.

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