noun 下载 🔗分享 下疳,硬下疳 Skin lesion, sometimes associated with certain contagious diseases such as syphilis. Examples : "The doctor examined the patient's skin and suspected syphilis due to the presence of a painless chancre on the genitals. " 医生检查了病人的皮肤,因为病人在生殖器部位出现了一个无痛的硬下疳,所以怀疑是梅毒。 medicine disease body biology 与AI对话词汇游戏阅读练习