torsion of appendix

例句：

1. 1.The patient was in a lot of pain after the surgery.
   手术后，病人非常疼痛。
2. 2.The rope was twisted around her ankle.
   绳子缠绕在她的脚踝上。
3. 3. The car's steering wheel was twisted when it hit a pothole.
   汽车在碰到一个坑时方向盘被扭曲了。