supervened on 随后发生于
supervened after 随后发生在……之后
difficulties supervened 困难随后出现
complications supervened 并发情况出现
unexpected events supervened 意外事件发生
1. Unexpected problems supervened during the project.
项目进行过程中出现了意想不到的问题。
2. A change in weather supervened and delayed the trip.
天气突然变化，导致旅行延期。
3. New difficulties supervened after the meeting.
会议结束后又出现了新的困难。
4. Nothing unusual supervened during the experiment.
实验过程中没有发生异常情况。
A: Why was the plan delayed?
A：为什么计划被推迟了？
B: Some unexpected problems supervened.
B：因为出现了一些意想不到的问题。
1) 随后发生（过去式）
2) 突然出现
3) 意外介入
4) supervene 的过去式和过去分词
1. 随后发生；接着发生（supervene 的过去式和过去分词）。
e.g.
Further complications supervened after the operation.
手术后又出现了进一步的并发情况。
2. 突然出现并影响已有情况。
e.g.
An unexpected delay supervened.
突然发生了意外的延误。
verb
1. Past tense and past participle of supervene, meaning to occur as an additional or unexpected event after something else, often affecting the existing situation.
Synonym: followed, occurred, intervened