musculus rectus femoris

例句：

1. 1. The doctor performed an operation on the patient's muscle.
   医生对病人的肌肉进行了手术。
2. 2. The patient was unable to walk due to a muscle injury.
   由于肌肉受伤，病人无法行走。
3. 3. The strength of the muscle is crucial for lifting heavy objects.
   肌肉的力量对于举起重物至关重要。