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。
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.
英国禁止携带HIV阳性病毒的医护职员对病人进行外科手术或牙科治疗，以防他们在手术或治疗过程中被医疗用具割伤流血，从而感染到病人。
Health workers who are HIV positive are banned from performing most surgery or dental treatment in case they cut themselves with their instruments and infect patients with their blood.
英国禁止携带HIV阳性病毒的医护职员对病人进行外科手术或牙科治疗，以防他们在手术或治疗过程中被医疗用具割伤流血，从而感染到病人。
Health workers who are HIV positive are banned from performing most surgery or dental treatment in case they cut themselves with their instruments and infect patients with their blood.
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