before-and-after

例句：

1. 1.He studied English before and after the exams.
   他在考试前后学习英语。
2. 2. The movie was released before and after the holiday season.
   这部电影在假日季节之前和之后上映。
3. 3. Before and after the meeting, I reviewed the documents.
   会议之前和之后，我审查了文件。