ear·drum 
(îrdrŭm′)
(îrdrŭm′)n.
The thin, semitransparent, oval-shaped membrane that separates the middle ear from the external ear. Also called tympanic membrane, tympanum.
| 单词 | eardrum |
| 释义 | ear·drum (îrdrŭm′)n. The thin, semitransparent, oval-shaped membrane that separates the middle ear from the external ear. Also called tympanic membrane, tympanum. |
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