当鱼不使用鱼鳍时，会将它们折叠起来，收回到特殊的沟槽或者凹陷部位；这样鱼鳍就可以与身体保持齐平，以维持它们平滑的外形。
When not in use, the fins are tucked into special grooves or depressions so that they lie flush with the body and do not break up its smooth contours.
本法对面部，特别是眼睑、鼻等部位的皮肤缺损提供了安全、有效、外形恢复满意的手术方法。
This method was safe and effective, and provided a satisfactory restoration of outward appearance from facial defects, particularly the defects of palpebra and nose.
在诸多鼻翼缺损修复方法中，该方法简便易行、术后鼻翼外形好，面部显著部位不增加新的瘢痕，有独到优越性。
In many methods for repair of defects of alae nasi, this method is simple, the appearance of alae nasi is good after operation and there is no new scar on face.
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