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