secondary tympanic membrane

• 次鼓膜,第二鼓膜

secondary tympanic membrane的用法和样例：

例句

1. The tympanic membrane is bulging.
   鼓膜隆起。
2. But the stapes would not take on its familiar role as a component of the terrestrially adapted tympanic ear for millions of years.
   不过，还要数百万年后，镫骨才会在适合陆生的鼓膜耳朵中，担任我们所熟悉的任务。