英语语法分析

Objective: Explore the effective treatment to the knee degenerative osteoarthrosis.

目的：探讨膝退行性骨关节病的有效治疗方法。

Objective: To study the pathological characters of temporomandibular osteoarthrosis.

目的：研究颞下颌关节骨关节病的病理特点。

Osteoarthritis is a chronic and progressing osteoarthrosis that often offends old people.

关节炎 是一种慢性进行性骨关节病，多见于老年人。