白斑

例句：

1. 1. The patient's skin showed several patches of white spots.
   病人的皮肤上出现了几个白斑。
2. 2. The doctor noticed a patch of white spots on the patient's arm.
   医生注意到病人手臂上有一块白斑。
3. 3. The researcher found that the disease was caused by a virus that causes patches of white spots on the skin.
   研究人员发现，这种疾病是由一种导致皮肤出现白斑的病毒引起的。