这是一场重要的新闻发布会。

This is an important press ___briefing.

总统在出发前召集内阁成员进行了一次简报会。

The president called a ___briefing for the cabinet members before the trip.

经理在会议前给我们做了一个简短的任务简报。

The manager gave us a short ___briefing about the task before the meeting.