听上去，这些都是让你拥有一口完美牙齿的理想方案，可事实并非如此。

It might sound like the ideal formula for perfect teeth, but, actually, it's not. In fact, any one of those habits could increase your risk of dental erosion or decay.

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你几乎可以听到那完美的牙齿咬紧的声音。

YOU can almost hear the gritting of perfect teeth.

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洁白、整齐、排列均匀的牙齿也许在美国堪称完美，但这种审美标准并不适合于所有人。

Perfect teeth - white, straight and evenly aligned - may be the ideal in America, but that aesthetic is not for everyone.

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