英语语法分析

Cancer of the hypopharynx: 4.47 men died for every one woman.

下咽部癌：男女死亡比例4.47：1。

Reconstruction of the hypopharynx has undergone a complicated evolution.

下咽癌的术后重建经历了一个非常复杂的演变过程。

Purpose To evaluate the clinical application of helical CT in larynx and hypopharynx.

目的探讨螺旋CT在喉及下咽部的临床应用价值。