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And this dimple is later forming a vesicle, a round ball, that goes on and forms the ear.
随后形成一个圆球状的泡囊，直至发育成耳朵。
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$firstVoiceSent
- 来自原声例句
And this dimple is later forming a vesicle, a round ball, that goes on and forms the ear.
随后形成一个圆球状的泡囊，直至发育成耳朵。
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