The professional grade whitening systems used by dentists offer significantly better results in a single visit than the consumer kits sold in drug stores.
牙医使用的专业级别的牙齿漂白方法，以及一对一服务的效果比药店里出售的套装要好的多。
The professional grade whitening systems used by dentists offer significantly better results in a single visit than the consumer kits sold in drug stores.
牙医使用的专业级别的牙齿漂白方法，以及一对一服务的效果比药店里出售的套装要好的多。
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