during

柯林斯词典

1. PREP If something happens during a period of time or an event, it happens continuously, or happens several times between the beginning and end of that period or event. 在…期间内 (不断发生)
Sandstorms are common during the Saudi Arabian winter. 在沙特阿拉伯的冬季期间内沙暴很常见。
2. PREP If something develops during a period of time, it develops gradually from the beginning to the end of that period. 在…期间 (逐步发展)
Wages have fallen by more than twenty percent during the past two months. 在过去的两个月期间工资已下降了二十多个百分点。
3. PREP An event that happens during a period of time happens at some point or moment in that period. 在…期间的某一刻 (发生)
During his visit, the Pope will also bless the new hospital. 在他访问期间，教皇也将为新医院祈福。

The (traffic ) congestion in the city gets even worse during the summer .
The work that the students do during the year will count towards their final degrees .
The city centre's quite lively during the day , but it's totally dead at night .
You're not allowed to talk during the exam .
Jean was my roommate during our first year at university .