between two days

例句：

1. 1. The meeting was held between two days.
   会议在两天之间举行。
2. 2. She is between the ages of 18 and 25.
   她的年龄在18岁到25岁之间。
3. 3. They are busy between work and study.
   他们忙于工作和学习之间。