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Appliance for training lip and facial muscles, e.g. after a stroke, is a U-shaped mouthpiece fitting over the teeth with a bulge at the lips to give them a massage action
Appliance for training lip and facial muscles, e.g. after a stroke, is a U-shaped mouthpiece fitting over the teeth with a bulge at the lips to give them a massage action
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机译：训练嘴唇和面部肌肉的器具，例如中风后，是一个U形吹口套在牙齿上，嘴唇隆起，可以进行按摩
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摘要
The appliance for training lip and facial muscles is a U-shaped transparent mouthpiece (1), with a bulge (2) at the lips. The mouthpiece is held in place by elastic openings (3) to fit over the teeth (4).
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