We all have similar skin, hair and eye coloring as well as similar facial structure, so it's hard to see the difference.
我们肤色长得差不多，头发和眼睛的颜色也很相似，甚至是面部结构也差不多。所以想找出区别还是有点难的。
Objective: To study the difference of upper airway form and hyoid position of the children with different vertical facial types in mixed dentition.
目的：比较替牙期不同垂直骨面型儿童上气道形态和舌骨位置的差异，为临床诊疗和颅面部生长发育的研究提供一定的参考依据。
It reflects the individual difference of facial expression control and self-presentation.
它反映面部表情控制和自我呈现的个体差异。
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