brain atrophy

例句：

1. 1. The patient's muscleshave begun to atrophy due tothe 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 isshowing signs of atrophy as itages.
   随着树木的老化，老树开始显示出萎缩的迹象。
3. 3. The disease caused significant atrophy in his limbs.
   这种疾病导致他的肢体严重萎缩。