1、Leukoplakia is a condition in which thickened, white patches form on the mucous membranes of the mouth or other areas of the body.
白斑是一种在口腔或其他身体部位黏膜上形成增厚、白色斑块的疾病。

2、Leukoplakia is commonly associated with tobacco use and is considered to be a precancerous condition.
白斑通常与烟草使用有关，并被认为是一种癌前病变。