It's more about the pain cause it hurts but you just kind of grind your teeth and bear it.

最糟糕的还是疼痛，纹身时非常疼，不过只要咬牙坚持就好了。

Even though tooth enamel is the hardest substance in your body, it can still be damaged, like if you grind your teeth, have cavities, or drink lots of acidic sodas.

尽管牙釉质是你身体中最坚硬的物质，但它仍然可以被损坏，比如磨牙、有蛀牙，或喝大量酸性汽水。