Background : Henoch - Schonlein purpura nephritis ( HSPN ) is a common secondary glomerulonephritis in children.过敏性紫癜性肾炎 ( HSPN ),是儿童时期常见的继发性肾脏疾病.Thymic involution caused by child abuse might lead to secondary immunodefi...
More than five-thousand secondary school students have been expelled for cheating.5,000多名中学生因为作弊被开除。He had kidney cancer, with secondary tumours in the brain and lungs.他患有肾癌,还有脑部和肺部的继发性肿瘤。One in four pupils leaving secon...