Good for strong bones, nails, and teeth.
对强健骨骼，指甲，牙齿非常有好处。
Our nails aren't as strong or sharp as the nails that animals have. But they are good for scratching backs and picking up COINS.
虽然人类的指甲没有动物的指甲强大、锋利，但是它们能帮助我们搔背，还有助于我们捡起硬币。
Take a close look at your nails. Are they strong and healthy looking?
凑近看看自己的指甲，看起来是否结实健康？
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