1. 料不到的事：unforeseen circumstances 意外情况 | unforeseen event 料不到的事 | unforward 不能发出
2. 未预见事件：unforeseen 未预见到的 | unforeseen event 未预见事件 | unforgettable 难忘的
3. 不可预见的事件：unfolded chain section ==> 无折叠链段 | unforeseen event ==> 不可预见的事件 | unforeseen item ==> 不可预见项目
1. The most unforeseen event occurred at the Fukushima Daiichi nuclear power plant.
2. They said he wanted to save it in the event of a recount, legal challenges or other unforeseen bills.