occasional cases can usually be result from some other more serious causes such as infections,vascular disease,and tumor

分类: 作业答案 • 2022-05-07 10:01:22

问题描述：

occasional cases can usually be result from some other more serious causes such as infections,vascular disease,and tumors.3822

答

由感染血管疾病或肿瘤等严重原因引起的疾病是不常见的.