a. without apparent forethought or prompting or planning
a. 无计划的, 未经筹划的, 意外的, 在计划外的
1. I had an unplanned meeting with my boss today.
我今天和我的老板有一个临时会议。
2. The unplanned trip turned out to be the best experience of my life.
这次临时的旅行成了我一生中最好的经历。
3. Sometimes, unplanned events can lead to great opportunities.
有时候，意外事件可以带来很好的机会。