None was severe injury , one case(0.1%) was moderateinjury, and the patient suffered of hydronephrosis caused by segmental necrosis of unilateral ureter.
其中中度损伤1例（0·1%），为一侧输尿管节段性部分狭窄致肾积水；
2
Participants had relatively low levels of knowledge about paraffin-related safety. They had high levels of unsafe practice and their perceived risk of injury was moderate.
参与者关于煤油安全使用的知识较少，操作危险性高，对伤害危险的感知能力一般。
3
The researchers excluded from the study patients with moderate to severe traumatic brain injury.