mitral orifice

例句：

1. 1. The doctor examined the patient's heart and found a mitralorifice that was severely damaged.
   医生检查了病人的心脏，发现一个二尖瓣口严重受损。
2. 2. Mitralorifice is an important partof the heart's functioning.
   二尖瓣口是心脏功能的重要组成部分。
3. 3. Thepatient needed surgery to repair the mitralorifice.
   病人需要进行手术来修复二尖瓣口。