man-made hazard造句

例句与造句

1. Based on the collection of the experiences and lessons from the network operation during the earthquake occurrence in fema and other organizations in usa , the countermeasures against the network system affected by the natural disaster or man - made hazards have been summarized
   摘要根据收集的美国fema等机构有关地震中信息网络运行的经验教训资料，综述了自然灾害和人为事件对信息网络系统冲击的对策研究。
2. It's difficult to find man-made hazard in a sentence. 用man-made hazard造句挺难的