clearly visible during early development, also: the skeleton surrounding the inner ear or otic vesicle, composed of the prootic, opisthotic, exoccipital, and supraoccipital.
也可指是围住内耳或耳小囊
，是由前耳、后耳、外枕与
枕所组成。
clearly visible during early development, also: the skeleton surrounding the inner ear or otic vesicle, composed of the prootic, opisthotic, exoccipital, and supraoccipital.
也可指是围住内耳或耳小囊，是由前耳、后耳、外枕与枕所组成。
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