Musculus extensor pollicis brevis

例句：

1. 1.The doctor examined the injured hand and found the extensor pollicis brevis was broken.
   医生检查了受伤的手，发现伸直的食指骨折了。
2. 2.He stretched his fingers to touch the ceiling, feeling the extensor pollicis brevis stretch.
   他伸展手指去触摸天花板，感觉到伸直的食指在拉伸。
3. 3. The patient had to use a prosthetic hand with an extensor pollicis brevis for support.
   病人不得不使用带有伸直的食指的假肢来支撑身体。