The jawbone, gums, lips, and soft and hard palates are constantly replenishing themselves throughout life.
颌骨，牙龈，嘴唇和软、硬颚不断的在生活中补充它们自己。
First touch, Scared. Actually the most in the gums grow inside a tooth on the gums. When there is a long hard meat, and finally forming today.
一摸。居然在上牙龈的最里面的牙床上长出一块牙齿。很早的时候那里只是一块硬肉，终于在今天成型。
Use a hard bristle toothbrush as this can damage the soft tissues in the gums.
别用硬毛牙刷。硬毛牙刷会伤害牙龈组织。
No matter how hard you try to clean your teeth, there will always be small amounts of food and bacteria under the gums.
不管你如何刷洗牙齿，总会有少量的食物和细菌藏在牙龈底下。
On the other hand, a hard-bristled brush, coupled with vigorous brushing can result in recession of the gums and the abrasion of tooth enamel and exposed root surfaces.
另一方面，硬毛牙刷刷，刷的积极可能导致经济衰退的牙龈和牙齿的珐琅质磨损，暴露根耦合表面。
If you brush your teeth too hard, your gums may start to bleed.
如果刷牙时太用力，齿龈就会开始出血。
If you brush your teeth too hard, your gums may start to bleed.
如果刷牙时太用力，齿龈就会开始出血。
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