Musculus extensor carpi radialis brevis

例句：

1. 1. The doctor examined the patient's knee and found it to be in good condition.
   医生检查了患者的膝盖，发现它状况良好。
2. 2. The muscles of the arm are extensors that help you lift your arms up.
   手臂的肌肉是伸展肌，它们帮助你抬起手臂。
3. 3.The antagonist muscles work against the extensors to prevent them from extending too far.
   拮抗肌与伸展肌一起工作，以防止它们伸展过度。