In the period of infant children mainly by abdominal breathing, and waist trousers on the elastic will affect children's normal breathing, and may cause child thoracic ribs evaginate deformity.
儿童在婴幼儿期主要靠腹式呼吸为主，而束腰裤上的松紧带会影响孩子的正常呼吸，而且可能引起孩子胸廓肋骨外翻畸形。
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