to the point

His feedback was brief but to the point, and I immediately knew what to fix.他的反馈很简短但切中要害，我立刻就知道该修改哪里了。

Please keep your presentation to the point—we only have fifteen minutes before the next session.请让你的发言简洁扼要——距离下一场会议我们只有十五分钟了。