during：

表示一定时间中的某个时间点,意思是“当…之际”；

例如：I don't like to go out during the rush hour.

还可表示一定时间中的某个时间段,意思是“在…期间”；

The weather got worse during the day.

也可以表示在某事件过程中的某一时间点,意思是“在…时”;

Her husband was taken to hospital during the night

也可表示延续某事件的全过程,意思是“在…持续的时间”“在…整个期间内”.

All food was repugnant to me during my illness.

during在句中的意思就是在.期间,