Jaw and chin support 下巴支撑
The rack moves a chin support member, which raises and lowers a chin piece.
齿条移动下颚支撑件，其升高和降低下颚部。
Thus, in a preferred class of embodiments, the collar has a pivot for the chin support pieces relative to the collar body, and an other pivot for the chin piece relative to the chin support pieces.
因而，在优选类别的实施例中，颈圈具有相对于圈体用于下颚支撑件的枢轴，和相对于下颚支撑件用于下颚部的另外的枢轴。
A decrease in jaw size could flatten the chin and soften the neckline, while changes in nose bones could lead to "decreased nasal support".
颌骨变小使得下巴扁平、颈线柔和，而鼻骨的变化则会使鼻子不再那么挺拔。
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