The deformity of the bilateral cleft lip is complicated. The routine procedure often results in secondary deformities, such as over-tightlip, and over-thin vermilion.
双侧唇裂畸形多较复杂，修复术后常出现上唇过紧，唇红过薄等继发畸形。
2
My grip on the control bar was painfully tight as I ran down the lip of the dune.