随着鼻子和下巴的硬组织和软组织的快速生长，嘴唇变得相对后缩。

With the faster growth of both hard and soft tissues of nose and chin, the lips become comparatively retrusive.

youdao

随着鼻子和下巴的硬组织和软组织的快速生长，嘴唇变得相对后缩。

With the faster growth of both hard and soft tissues of nose and chin, the lips become comparatively retrusive.

youdao