The mouse set to work at once, biting with his sharp little teeth at the heavy ropes that held the lion.

老鼠马上开始工作，用他又尖又小的牙齿咬断缚住狮子的大绳。

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Teeth that have moved may be lost because of abnormal biting pressures.

牙齿因松动而脱落是因为不正常咬合的缘故。

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Next brush the outside surface of your teeth. Then brush the biting surface of your teeth. After that wash your mouth with water.

接下来刷你牙齿的外表面，然后，刷你牙齿的咬合面，之后，漱口。

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