- contingency plan
- 意外事件: accident; contingency
- 计划: plan; project; programme; de ...
- 事故；意外事件: incident
- 意外事件: a bolt from the blue; afterclap; fortuitous accidents; incident; surprise; the accident; thunder bolt; thunderbolt; unexpected ha enings; unscheduled event
- 飞机意外事件: aircraft incident
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