She still has a perfect set of teeth.
她的一副牙齿仍然完好无缺。
She's 80, but she still has a perfect set of teeth.
她虽已80岁，但仍有一副完好的牙齿。
The dental appliance provides the patient with the appearance of a perfect set of teeth and an ideal smile without a need to alter the dental structure of the patient's teeth.
牙科用具为患者提供了一套理想的牙齿外观和完美的笑容，而不需要改变患者牙齿的牙齿结构。
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