brownish black macula

例句：

1. 1.The doctor examined the patient's brownish black macula and found no signs of disease.
   医生检查了病人的棕色黑色视网膜，没有发现任何疾病的迹象。
2. 2.The patient's brownish black macula was unusually dark, which worried the doctor.
   患者的棕色黑色视网膜异常暗，这让医生感到担忧。
3. 3. The examination revealed that the patient's brownish black macula had a slight irregularity, which could be related to her age.
   检查显示，患者的棕色黑色视网膜略有不规则，这可能与她的年龄有关。