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...
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...
The dioxins pollution control including conventional removal techniques and degradation techniques is introduced.二恶英的污染排放控制技术则介绍了传统的去除技术和一些降解技术.Cremation pumps dioxins, hydrochloric acid, sulfur dioxide, and carbon dioxi...