常见例句This primary bone tumor mainly occurs in the diaphysis of long bones of children and young adults.There is a slight male predominance.这种原发性骨肿瘤主要见于儿童与青少年的长骨骨干，稍多见于男性。long bone diaphysis fractures in lower limbs下肢长骨干骨折 返回 diaphyses