Proof of this can be determined by dropping a baby tooth into a glass of it, then going back the next morning to find most of it eaten away.
我们来终结这个流言：将一颗牙齿仍在可乐玻璃杯里，第二天早上回来发现大部分被蚕食了。
My dentist always goes the extra mile, offering free back massages at the end of a stressful tooth extraction.
我的牙医总是非常尽心尽力，会在紧张的拔牙手术后给病人按摩。
Not only do they have a sharpened peg of a tooth but their teeth narrow down to a razor sharp edge at the back making the tigers bite much more lethal.
它们不仅仅有锋利的三角状牙齿，而且背面向下逐渐收缩成剃刀一样锋利，这使得老虎的咬更加致命。
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