n. labra
misc. labium externum
将密封圈的外圆和密封唇上涂上一层薄薄的凡士林。
Thinly coat sealing lip and outer circumference of sealing ring with vaseline.
在设计患侧唇的推进瓣时，应尽量避免鼻翼基底的水平切口，更不宜做绕鼻翼外脚的弧形切口；
In addition, the horizontalis incision on basis nasi and the arc incision around alae nasi must be avoided as far as possible when the push flap of affected side was designed.
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