atrophy of corpus iuteum

例句：

1. 1.The patient's muscles have begun to atrophy due to lack of exercise.
   由于缺乏锻炼，患者的肌肉已经开始萎缩。
2. 2. The old tree has started to atrophy as it age.
   这棵老树开始因为年龄而萎缩。
3. 3. The disease caused the muscle tissue to atrophy in the affected area.
   这种疾病导致受影响区域的肌肉组织萎缩。