英语语法分析

Pedicled jaw-neck flap on preauricular region 3 cases.

耳前窄蒂侧颌颈皮瓣3块。

Objective: Control the further infection of intractable congenital preauricular fistula.

目的：控制难治性先天性耳前瘘管继发感染。

Congenital preauricular fistula is a common abnormality consequent on deficiency of embryonal development.

先天性耳前瘘管由胚胎发育异常引起。