ad hoc rules

例句：

1. 1.We decided to hold the meeting in an ad hoc location.
   我们决定在一个临时地点召开会议。
2. 2. The project was a success because we had to work with an ad hoc team.
   这个项目成功了，因为我们不得不与一个临时团队合作。
3. 3. The company's decision to close down the factory was made ad hoc due to economic conditions.
   由于经济状况不佳，公司临时决定关闭工厂。