Also the tooth brush has the shock effect of the upper and lower jowl and the gum, which can slack the facing muscle, activate blood circulation, and have marked health care function.
还因对上下颌骨和牙床的震动作用，能松弛面部肌肉，促进血液循环，具有明显的保健功能。
Also the tooth brush has the shock effect of the upper and lower jowl and the gum, which can slack the facing muscle, activate blood circulation, and have marked health care function.
还因对上下颌骨和牙床的震动作用，能松弛面部肌肉，促进血液循环，具有明显的保健功能。
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