下颔的下降赖臼齿与舌骨肌、颏舌骨肌和颈阔肌。

Make sure that your tongue touches the back of the lower teeth.

youdao

下颔的下降赖臼齿与舌骨肌、颏舌骨肌和颈阔肌。

Make sure that your tongue touches the back of the lower teeth.

youdao