congenital degeneration of membranous labyrinth

例句：

1. 1. The patient's congenital degeneration of the membranous labyrinth was severe enough to require surgery.
   患者的先天性膜迷路发育不全严重到需要手术。
2. 2. The child's hearing loss is due to a congenital degeneration of the membranous labyrinth.
   这个孩子的听力损失是由于先天性膜迷路发育不全导致的。
3. 3. Researchers have identified several genes that contribute to the congenital degeneration of the membranouslabyrinth.
   研究人员已经确定了几个基因，它们对先天性膜迷路发育不全有贡献。