1. Bullae are rounded or irregularly shaped blisters containing serous or seropurulent fluid. They differ from vesicles only in size, being larger than 1 cm.
大疱为圆形或不规则形的大水疱，含浆液性浆液脓性液体，大于1cm，与水疱仅是大小之别。
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2. Bullae are rounded or irregularly shaped blisters containing serous or seropurulent fluid. They differ from vesicles only in size, being larger than 1 cm.
