突发事件: 1. emergency2. thunderbolt 用来指突发事件Used to indicate a sudden occurrence.这告示是千真万确的突发事件The announcement was a veritable bolt.这次突发事件定将导致一场危机。This incident will surely bring on a crisis.(站在悬崖的边缘上）；在一个扩展的意义上它指一件突发事变的可能性或临近（stood on the brink of the cliff); in an extended sense it indicates the likelihood or imminence of a sudden change
大米粒圆又圆
