due course

例句：

1. 1. The project is due to start next month.
   这个项目预定下个月开始。
2. 2. She had to follow the due course of events.
   她必须遵循既定的事件发展顺序。
3. 3. The due course of events led us to make a decision.
   既定的事件进程使我们做出了决定。